Customers Say Checkout “Just Spins” — 5 Causes and Fixes

Updated September 20, 2026 · 8 min read

Your customer adds a product to their cart, goes to checkout, fills everything out—and then clicks Place Order.

Nothing happens.

The button spins.

The page appears to be loading.

Maybe it eventually displays an error. Maybe it doesn’t.

From the customer’s perspective, the checkout is simply broken.

And that’s a serious problem.

A slow checkout can lead to abandoned carts, frustrated customers, duplicate payment attempts, support requests, and lost sales.

But here’s the important part:

Not every abandoned cart is a marketing problem.

Sometimes customers aren’t abandoning checkout because they changed their minds.

Sometimes they can’t complete the purchase.

If customers are telling you that your WooCommerce checkout “just spins,” here’s where to look.

First: Determine Whether Checkout Is Actually Broken

Before changing anything, try to reproduce the problem yourself.

Open your website in a private or incognito browser window and go through the checkout process like a customer.

Don’t rely only on your administrator account.

Being logged into WordPress can change how your website behaves because administrators may bypass caching, security rules, optimization settings, or other restrictions.

Test as a normal customer.

Try:

• A different browser

• A mobile device

• A desktop computer

• A different product

• A guest checkout

• A logged-in customer account, if applicable

If you can reproduce the problem, you have something concrete to investigate.

If you can’t reproduce it, you may need to look at browser console errors, server logs, payment gateway logs, and customer reports to determine what is happening.

1. A JavaScript Error Is Breaking the Checkout

This is one of the most common reasons a WooCommerce checkout button appears to do nothing.

WooCommerce relies heavily on JavaScript for checkout functionality.

JavaScript can handle things such as:

• Updating checkout totals

• Calculating shipping

• Applying coupons

• Updating customer information

• Payment gateway interactions

• Address validation

• Payment fields

• Checkout AJAX requests

If another script throws an error, WooCommerce may not be able to complete the checkout process.

The customer sees a spinner.

Behind the scenes, the browser may have encountered an error that prevents the next step from executing.

How to check

Open your browser’s developer tools.

In Chrome, you can usually press:

F12

Then select:

Console

Look for errors appearing when you click the checkout button.

You may see references to:

• JavaScript errors

• Failed requests

• AJAX errors

• CORS errors

• Undefined functions

• Blocked resources

• Payment gateway scripts

You don’t necessarily need to understand every error.

The important question is:

Does an error appear at the exact moment checkout stops working?

If it does, you’ve found a valuable clue.

2. A Plugin or Theme Conflict Is Breaking Checkout

WooCommerce websites can have a lot of moving parts.

Your checkout might involve:

• WooCommerce

• Your WordPress theme

• A page builder

• Payment gateways

• Shipping plugins

• Tax plugins

• Coupon extensions

• Product add-ons

• Fraud protection

• Security plugins

• Analytics

• Conversion tracking

• Chat software

• Custom JavaScript

Any one of these can potentially interfere with checkout.

A plugin update can also introduce a compatibility problem that wasn’t present previously.

A simple test

If you can reproduce the problem, temporarily test the website with non-essential plugins disabled.

Do this on a staging website whenever possible.

Don’t randomly disable plugins on a busy production store without understanding the consequences.

If checkout starts working after a particular plugin is disabled, you’ve identified a strong suspect.

You can then investigate whether:

• The plugin needs an update

• Another plugin needs an update

• The plugin configuration is incorrect

• The plugin is loading unnecessary scripts

• The plugin needs to be replaced

• Custom code needs to be adjusted

Don’t blame WooCommerce immediately

It’s tempting to say:

“WooCommerce checkout is broken.”

But the actual problem may be a completely unrelated plugin injecting JavaScript into the checkout page.

3. Your Payment Gateway Isn’t Responding Correctly

Customers can reach checkout successfully and still get stuck when they attempt to place an order.

That’s when the payment gateway becomes a major suspect.

Your store may use services such as:

• Stripe

• PayPal

• Authorize.Net

• Square

• Braintree

• Other payment processors

The checkout process may need to communicate with the payment provider before the order can be completed.

If that communication fails, the customer may be left staring at a loading spinner.

What can cause a payment gateway failure?

Potential causes include:

• Expired API credentials

• Incorrect API keys

• Webhook problems

• Gateway configuration changes

• Plugin compatibility issues

• Payment provider outages

• Security software blocking requests

• JavaScript conflicts

• Failed AJAX requests

• Incorrect environment settings

Check the gateway logs

Most major payment gateway plugins provide some form of logging or diagnostic information.

If the problem only happens when a specific payment method is selected, that’s an important clue.

For example:

Credit card checkout works, but PayPal checkout spins forever.

That’s very different from:

Every checkout attempt spins forever.

The first points toward a payment-method-specific problem.

The second suggests something more fundamental may be wrong.

4. Caching or Optimization Is Interfering With Checkout

Caching is great for speeding up WordPress websites.

But checkout pages are different.

Your homepage can often be cached and served to thousands of visitors.

Your checkout cannot be treated the same way.

Checkout may contain dynamic information such as:

• Customer details

• Cart contents

• Shipping calculations

• Taxes

• Coupons

• Payment information

• Session data

If a caching or optimization system interferes with these requests, checkout can behave strangely.

Common culprits

Look at:

• WordPress caching plugins

• Hosting-level caching

• CDN caching

• JavaScript optimization

• JavaScript delay

• JavaScript combination

• CSS optimization

• HTML optimization

• Object caching

• Security/firewall rules

JavaScript optimization deserves special attention

Features such as:

“Delay JavaScript”

can improve page speed.

But delaying the wrong script can break functionality.

A payment gateway script that needs to execute immediately may not work correctly if it has been aggressively delayed.

Likewise, combining or minifying scripts can occasionally expose compatibility problems.

Checkout should be tested after optimization changes

If checkout worked yesterday and you enabled a new performance optimization setting today, don’t overlook that connection.

Performance improvements should never come at the expense of the ability to purchase a product.

5. WooCommerce Sessions, Cookies, or AJAX Requests Are Failing

This is one of the more technical causes—and one that can be particularly frustrating to diagnose.

WooCommerce relies on sessions and browser cookies to maintain information about a customer’s shopping experience.

Your site may need to keep track of:

• Cart contents

• Customer information

• Shipping information

• Checkout state

• Other session-related data

If those sessions aren’t working correctly, WooCommerce can behave unpredictably.

A customer may add something to their cart successfully but then encounter problems when checkout tries to update information.

What can interfere with sessions?

Potential causes include:

• Incorrect caching

• Cookie problems

• Security plugins

• Server configuration

• PHP issues

• Plugin conflicts

• Custom code

• CDN configuration

• Session-related plugin behavior

Watch the Network tab

If you want to investigate this at a deeper level, open your browser’s developer tools and select:

Network

Then attempt checkout again.

Look for requests that:

• Fail

• Return 4xx errors

• Return 5xx errors

• Take an unusually long time

• Keep repeating

• Never complete

WooCommerce checkout often depends on AJAX requests.

If one of those requests fails, the browser may continue displaying the loading state because the expected response never arrives.

How to Tell Which Problem You’re Dealing With

Here’s a quick diagnostic guide.

This isn’t a definitive diagnosis, but it can dramatically narrow the search.

Don’t Forget the “Works for Me” Problem

One of the hardest parts of checkout troubleshooting is that your checkout may work perfectly while customers are still failing.

Why?

Because your environment isn’t necessarily the same as theirs.

You might be:

• Logged into WordPress

• Using a different browser

• Using a different device

• Located in a different region

• Using a different payment method

• Bypassing certain caches

• Exempt from security rules

• Using saved customer information

That’s why testing as a guest is so important.

Try to reproduce the customer’s exact situation.

If they say:

“I was on my phone, using Chrome, checking out as a guest, and PayPal just kept spinning.”

That’s far more useful than simply testing checkout while logged into WordPress on your desktop.

What Not to Do

When checkout is broken, it’s tempting to start changing everything.

Avoid that.

Don’t immediately:

• Reinstall WooCommerce

• Delete plugins

• Change themes

• Change PHP versions

• Disable every security feature

• Purge every database table

• Restore an old database

• Make dozens of changes simultaneously

You may fix the symptom while creating a much bigger problem.

Instead:

Reproduce → Observe → Isolate → Test → Fix → Verify

That process gives you a much better chance of finding the actual cause.

A WooCommerce Checkout Troubleshooting Checklist

If customers report that checkout is stuck loading, work through this list:

☐ Reproduce the problem as a guest

☐ Test desktop and mobile

☐ Try multiple browsers

☐ Test different payment methods

☐ Check the browser console for JavaScript errors

☐ Check the Network tab for failed AJAX requests

☐ Check WooCommerce logs

☐ Check payment gateway logs

☐ Review recently updated plugins

☐ Review recent theme or custom-code changes

☐ Check caching exclusions

☐ Check JavaScript optimization settings

☐ Check WooCommerce sessions and cookies

☐ Test plugins on staging

☐ Test checkout again after each change

What About Abandoned Carts?

This is where the distinction becomes important.

If customers are reaching checkout but can’t complete their purchase, sending more abandoned-cart emails isn’t necessarily going to solve the problem.

Imagine a customer tries to pay three times and the checkout button just spins.

They aren’t necessarily undecided.

Your website may be preventing the sale.

Before spending more money on conversion optimization, advertising, or abandoned-cart campaigns, make sure customers can actually complete the checkout process.

A technically broken checkout can turn otherwise ready-to-buy customers into abandoned carts.

How Often Should You Test Your WooCommerce Checkout?

Don’t wait for a customer to report a problem.

Test checkout periodically—especially after making significant changes.

You should consider testing after:

• WooCommerce updates

• Plugin updates

• Theme updates

• PHP updates

• Hosting migrations

• Payment gateway changes

• Caching changes

• Security changes

• Major website redesigns

• New checkout functionality

For an eCommerce website, checkout isn’t something you should test once and forget.

It’s one of the most important functions on the entire site.

The Bottom Line

When a WooCommerce customer says:

“I click Place Order and it just spins.”

Don’t assume it’s an abandoned-cart problem.

It could be:

1. A JavaScript error

2. A plugin or theme conflict

3. A payment gateway problem

4. Caching or optimization interference

5. A WooCommerce session, cookie, or AJAX issue

The key is to reproduce the problem and determine where the checkout process is actually failing.

Once you know whether the problem is happening in the browser, WordPress, WooCommerce, the server, or the payment gateway, the solution becomes much easier to identify.

If customers are reporting checkout problems on your WooCommerce store, NJ Premium Web can help investigate the issue—from JavaScript and plugin conflicts to caching, WooCommerce sessions, payment gateways, and server-side problems.

Contact NJ Premium Web for WooCommerce troubleshooting and support →

Frequently Asked Questions

Why does my WooCommerce checkout keep spinning?

A WooCommerce checkout that continuously spins can be caused by JavaScript errors, plugin conflicts, failed AJAX requests, payment gateway problems, caching, optimization settings, cookies, or WooCommerce session issues.

Why does my WooCommerce Place Order button not work?

The Place Order button depends on several systems working correctly. A JavaScript error, payment gateway problem, failed AJAX request, plugin conflict, or security rule can prevent the order from being submitted.

Why does WooCommerce checkout work for me but not my customers?

Administrators may experience a different version of the website because they can bypass caching, security rules, or other restrictions. Test checkout while logged out, in an incognito window, on a different device, and with multiple payment methods.

Can a caching plugin break WooCommerce checkout?

Yes. WooCommerce checkout relies on dynamic information, cookies, sessions, and AJAX requests. Incorrect caching or JavaScript optimization can interfere with those functions.

Why does my WooCommerce checkout work on desktop but not mobile?

Mobile-specific JavaScript, responsive design issues, payment gateway interfaces, browser differences, or mobile-specific optimization settings can cause checkout problems that don’t appear on desktop.

How do I troubleshoot a WooCommerce checkout error?

Start by reproducing the problem as a guest. Then check the browser console, Network tab, WooCommerce logs, payment gateway logs, recent plugin updates, caching settings, and recent website changes. Test one change at a time so you can identify the actual cause.