Hello,
We apologize for the issue you are facing with the fluctuation of your SEO score. Thank you for providing detailed information about the steps you’ve already taken to troubleshoot the problem.
Since you’ve already cleared the cache and checked for conflicts with other plugins and themes, we recommend recalculating the SEO scores for your published posts. This can help ensure that the scores reflect the most current data.
To do this, navigate to WordPress Dashboard > Rank Math > Status and Tools > Database Tools and click on the Recalculate Scores option. This process may take some time depending on the number of posts on your website, so please keep the browser open until it completes.

Once the recalculation is complete, you should see a success message, and hopefully, your SEO score will stabilize.
If the issue persists after this step, please reply to this ticket, and a human agent from the Rank Math Support team will assist you further.
Thank you for your patience, and we hope this helps resolve your issue!
Sources:
Rank Math Status and Tools » Rank Math
Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
Could you please share a screencast of the issue by using a tool like https://loom.com so that we can check this further for you? A visual representation of the issue will help us to understand it better.
Looking forward to helping you.
Thank you.
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.