Hello,
Thank you for reaching out to us and we apologize for the inconvenience you are experiencing with your Content AI credits.
It seems that you have already gone through the troubleshooting tips, but just to confirm, have you tried refreshing the credits in your WordPress Dashboard? You can do this by navigating to Rank Math SEO → General Settings → Content AI and refreshing the credits. Here’s a screenshot for reference:

Additionally, please open a post or page from your WordPress dashboard, navigate to the Content AI box, and click the Refresh icon, as shown below. Your Content AI credits should display correctly.

If you’ve already tried these steps and are still facing issues, please let us know, and we will be happy to assist you further.
We appreciate your patience and understanding.
Sources:
How to Restore Missing Content AI Credits » Rank Math
Yes, I have tried all options in the troubleshooting tips guide.
Hello,
Please try re-activating your Rank Math plugin. To do that, navigate to your WordPress admin area > Rank Math > Dashboard > Help, disconnect and reconnect your Rank Math account.


After that, try refreshing the credits again.
If the issue persists, we might need to take a closer look at the settings. Please edit the first post on this ticket and include your WordPress login in the designated Sensitive Data section.
Please do take a complete backup of your website before sharing the information with us.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:
https://wordpress.org/plugins/temporary-login-without-password/
You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):
https://wordpress.org/plugins/wp-security-audit-log/
We really look forward to helping you.
Hello,
I have updated the sensitive data as requested. Can you please check further?
Thank you.
Hello,
You were not running the latest version of Rank Math. We updated it and now the credits are reflecting properly.
Hope that helps and please do not hesitate to let us know if you need my assistance with anything else.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.