Hello,
Thank you for reaching out to us. I’m sorry to hear that you’re experiencing issues with accessing the AI tools in Content AI.
It seems like you might need to refresh the credits to start using the AI tools. Please head over to your WordPress Dashboard, then navigate to 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 the AI tools again, and they should work without any issues.
I hope this helps! If you need further assistance, please don’t hesitate to let us know.
Sources:
How to Use the Content AI Tools in Rank Math SEO » Rank Math
How to Use Content AI in Block Editor » Rank Math
Content AI Overview » Rank Math
Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
We can see that the Content AI Starter subscription is active on your account.
Please follow the guide below to resolve the issue.
Can you please confirm to us if you’re seeing the correct number of credits when you log in to your rankmath.com/my-account/websites?

If you’re seeing the correct number of credits here like in the image above, then this is an issue with syncing information between rankmath.com and your website. Disconnecting and then reconnecting your account should mostly resolve this
1 . Please verify that you’re running the latest versions of the Rank Math plugins. According to the Rank Math changelog https://rankmath.com/changelog, the current versions are Rank Math PRO v3.0.49 and Rank Math Free v1.0.206.
2. Please head over to your WordPress Dashboard > Rank Math > Dashboard > Help, and from there disconnect and reconnect your Rank Math account.
https://i.rankmath.com/ZvEfVb
https://i.rankmath.com/OZSwOw
3. Once done, please try to refresh the credits from WordPress Dashboard > Rank Math > General Settings > Content AI and see if that works for you. Here’s a screenshot for reference:

You should be seeing your correct Content AI credit and you can continue using the Content AI. If not, please let us know and we’ll be happy to investigate it further.
Hope this helps, and please do not hesitate to let us know if you need our assistance with anything else.
Thank you for choosing Rank Math.
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.