Hello,
I apologize for the inconvenience you are facing with Rank Math’s SEO Analyzer not recognizing your sitemap even though it is visible and accessible.
If your sitemap is working correctly and visible to sitemap checker sites like seoptimer.com, it might be a specific issue with how Rank Math’s SEO Analyzer is detecting the sitemap.
To address this problem, I recommend checking if the sitemap module is enabled in Rank Math. You can do this by going to Rank Math SEO → Dashboard and ensuring that the Sitemap module is enabled as shown in the screenshot below:

If the module is already enabled, and your sitemap is correctly configured, it might be a temporary glitch in the SEO Analyzer tool. In such cases, I suggest waiting for a while and running the analysis again to see if the issue persists.
If the problem continues, please reply to this ticket, and a human agent from the Rank Math Support team will further investigate the matter to assist you effectively.
Thank you for your understanding and patience.
Best regards.
Sources:
Analyzing Your Site’s SEO with Rank Math’s SEO Analysis Tool
Rank Math Sitemap Issues and Their Fixes » Rank Math
Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
Since you already have the sitemap you can ignore the error on the SEO Analyzer.
Hope that helps and please don’t hesitate to let us know if you have any other questions.
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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.