Hello,
Thank you for contacting the support and sorry for any inconvenience that might have been caused due to that.
In this case, head over to Rank Math > Status & Tools > Database Tools > and click the Clear SEO Analysis and Remove Transients buttons to flush the SEO Analysis cache

Once done, clear your website and any server-level caching on your site before doing the Sitewide analysis again.
Hope that helps.
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.