Payment Nonce Missing

Hi there!

I completely understand how critical this is when payments are failing, it needs immediate attention. Let’s work through this together and get to the root of it.

The “Payment Nonce Missing” error is commonly caused by a conflict or something interrupting the checkout request.

To help narrow this down, could you please confirm:

• Which payment methods are currently enabled in your Square for WooCommerce settings?
• Did this start after any recent changes (plugin/theme updates, new plugins, custom code, etc.)?

I also found a similar case where another user experienced the same issue, and it was caused by a plugin conflict. You can review it here:
https://ww.wp.xz.cn/support/topic/payment-nonce-is-missing-error-with-square-at-checkout/#post-18711616

It would also really help if you could check the following:

• Go to WooCommerce → Status → Logs and look for any fatal error logs or Square-related logs around the time the payment failure occurs. Please share those with us.
• Open your browser console (Ctrl + Shift + I → Console tab), try placing an order again, and let us know if you see any error messages there.

To assist you further, I’d also like to understand your site setup better. Please share your System Status Report which you can find via WooCommerce > Status

Please use https://pastebin.com/ or https://gist.github.com/ and share a link to that paste in reply here. Once we have more information, we’ll be able to assist you further.

Hi there!

Thank you for sharing more details about the issue. I tried placing an order using a Square test card, but I received a “card invalid data” error. Could you please confirm whether Square is currently set to sandbox mode or live mode?

Also, regarding the error you shared “failed Creating token multiple user exists in table”

This log entry suggests there may be an issue when the plugin tries to create or map a customer/token in Square if multiple matching users exist.

• Please confirm whether the error in the Square logs appears every time you see “Payment Nonce Missing”, or if it also appears in other situations.
• If possible, share a recent Square log (redacting any sensitive data) from WooCommerce → Status → Logs, so we can review the full context.

If you’re currently using Square in live mode, could you please create a staging site and deactivate all plugins except WooCommerce and WooCommerce Square? Then enable Square sandbox mode and share the staging site URL with us.

I’d like to place a test order to check whether the same issue occurs when only WooCommerce and the Square plugin are active. I’ve tried to replicate this on my end but wasn’t able to reproduce the issue, which suggests there may be something specific in your site environment causing it.

You can use a staging plugin to safely create a copy of your site so your live site remains unaffected. In the meantime, you may keep the Square plugin disabled on your live site until we resolve the issue on staging.

Most important could you please share your System Status Report which you can find via WooCommerce > Status

Please use https://pastebin.com/ or https://gist.github.com/ and share a link to that paste in reply here. Once we have more information, we’ll be able to assist you further.

Regarding caching exclusions you’ve already done a solid job there. Nothing obvious seems missing in your exclusion list. However, even with exclusions, tools like WP Rocket can still interfere via:

• JavaScript delay/defer
• Minification/combination

Once we have a clean setup on the staging site, we’ll be in a much better position to identify the root cause of the issue. Thank you for your cooperation and understanding.

Hi @avagolf,

Thank you for the update, I appreciate you taking the time to circle back with your findings. It’s great to hear you were able to track this down to a plugin conflict, that kind of issue can definitely be tricky to pinpoint.

No issues at all, glad you’ve identified the conflicting plugin. The next step would be to reach out to the developers of the FunnelKit plugin so they can review the conflict on their end and help ensure compatibility moving forward.

I’ll go ahead and mark this topic as resolved. If anything else comes up or you need a hand with anything further, feel free to reply here or open a new thread anytime.

If you have a moment, we’d really appreciate it if you could leave a review for WooCommerce Square based on your experience. It helps other merchants make informed decisions and supports the continued improvement of the plugin: https://ww.wp.xz.cn/support/plugin/woocommerce-square/reviews/#new-post

Hi there,

Thanks for taking the time to report back I appreciate the update.

I’m glad to hear that things are now working on your end and the issue has been resolved.

Don’t hesitate to get in touch if anything else comes up.