Hello,
Thank you for reaching out to us. We apologize for the inconvenience you are facing despite activating a new account and receiving 750 free credits for using the AI services.
To address the issue, please ensure that you have refreshed the credits in the Content AI settings. You can do this by navigating to WordPress Dashboard → Rank Math → General Settings → Content AI and refreshing the credits. Here’s a screenshot for reference:

After refreshing the credits, try using the Content AI services again, and it should work without any problems. If you encounter any further issues or need additional assistance, feel free to let us know.
We appreciate your understanding and patience in this matter. Thank you for bringing this to our attention.
Sources:
Content AI – Your Personal AI Assistant by Rank Math
Hello,
It seems that you already marked this ticket as “Resolved”.
Do you still need our assistance regarding this issue?
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Thank you.