Hello,
Thank you for reaching out to us. We’re sorry to hear that you’re experiencing issues with connecting Content AI to your WordPress website.
To reconnect your website with Content AI, please follow the steps outlined in this knowledge base article: How to Connect/Disconnect Your Website From Content AI.
If you’ve already tried these steps and are still facing issues, please ensure that you have refreshed the credits in the General Settings of Rank Math. 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 need further assistance, please don’t hesitate to let us know.
Sources:
How to Connect/Disconnect Your Website From Content AI
Rank Math General Settings
Content AI Overview » Rank Math
This is an automated reply from Rank Math Support Bot. If you need further assistance, please reply to this topic and a human support agent will reply to you shortly.
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.