Error during creating account in Checkout

Hi HOLTONx,

I can't tell for sure since it sounds like properly testing it requires putting through actually purchases. But I noticed a couple of things on the checkout page that might have some bearing.

First, the "Informacje dodatkowe" additional information module (on the right, below the purchase button) actually contains hidden form fields (billing address, etc) that more or less duplicates the main "Dane płatności" form. It's using the same CSS IDs for the fields and since the IDs are supposed to be unique on the page it's possible that code relying on the IDs could get confused. I'd suggest you try temporarily removing the "Informacje dodatkowe" from the page to see if it helps (fully disable or remove it from the layout, rather than hiding it with CSS).

Second, I see some JavaScript errors relating to this file:

https://tricolorstore.pl/wp-content/plugins/woocommerce-payments/dist/frontend-tracks.js

I'm not sure of the significance of the errors, which look like this:

POST https://tricolorstore.pl/zamowienie/null 404 (Not Found)

It seems to be failing to do something (maybe analytics related, given the "tracks" in the file name), but it might be worth looking into - i.e. check for any updates to the WooCommerce Payments plugin, or message the developers for their input.