Hello,
Thank you for contacting Rank Math today, and we apologize for any inconvenience this may have caused.
This problem has been resolved in our most recent release. Please make sure your Free and PRO plugins are up to date: https://rankmath.com/changelog/
Following the update, go to WP Dashboard > Rank Math > Status & Tools > Database Tools and Flush the SEO Analysis Data before running the analysis again.
I hope this information is helpful, and please do not hesitate to contact us if you require any additional support.
Thank you.
Hello, Thank you for your reply. I have cleared the SEO analysis data before relaunching the analysis. But the problem still persists 🙁 Here is the displayed message: “Could not check Focus Keywords in posts – the post meta table exceeds the size limit”.
Hello,
We might need to take a closer look at the settings. Please edit the first post on this ticket and include your WordPress & FTP logins in the designated Sensitive Data section.
Please do take a complete backup of your website before sharing the information with us.

It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead:
https://wordpress.org/plugins/temporary-login-without-password/
You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):
https://wordpress.org/plugins/wp-security-audit-log/
We really look forward to helping 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.