Welcome to the WPML support forum. I will do my best to assist you in resolving the issue.
Please try the following steps to register the site with a new key after a full site backup (mandatory), and make sure you are getting the expected result or not.
1) Visit your account page at https://wpml.org/account/sites/.
2) Delete the existing key for your site (hidden link).
3) Navigate to Plugins >> Add New >> Commercial tab (after login to hidden link).
4) Click on "Unregister WPML from this site".
5) Refresh the page.
6) Click on "Get a key for this site" (assign prepaid credits to the site while creating the site key — for example, 5,000 credits).
7) Copy the newly generated code.
8) Return to Plugins >> Add New >> Commercial tab.
9) Register the site with the new key.
This doesn't help at all. The problem still remains, I've also updated woocommerce, but this also didn't change anything. Tried a different browser - still nothing.
Thank you for the updates. Please go to WPML >> Translation Management >> Translation Tools and check if the assigned translation credits are now visible.
If the credits are still not showing, kindly share screenshots of the following pages so we can further investigate:
Here's a video that shows the problem, the credits are visible in the panel but the translation doesn't "see" them in the translation panel, a "fix this" button is shows but when clicked nothing happens (a windows appears to show for while).