Hello,
Thank you for reaching out to us. We’re sorry to hear that you’re experiencing issues with Content AI on your other site.
It seems like the issue might be related to the credits not being refreshed after the recent update. To resolve this, please head over to WordPress Dashboard → Rank Math → General Settings → Content AI and refresh the credits. Here’s a screenshot for reference:

Once you’ve refreshed the credits, please try using Content AI again, and it should work without any issues.
If you encounter any further issues or need additional assistance, please don’t hesitate to let us know.
We appreciate your patience and understanding.
Sources:
Content AI Overview » Rank Math
How to Use Content AI in Elementor » Rank Math
How to Use Content AI in Classic Editor » Rank Math
<3 Thank you so much – solved
Kind regards Anita
Hello,
We’re delighted to hear that this issue has been resolved. We appreciate your kind words and your support.
I’m closing this ticket now but if you ever have another question or need any help in the future, please don’t hesitate to create a new forum topic. We’ll be more than happy to assist you again.
Thank you for choosing Rank Math and have a wonderful day!
Cheers