Fix Sitemap Fetch Error

My WordPress site’s sitemap is returning the “Couldn’t fetch” message inside Google Search Console. I suspect the culprit sits in Rank Math’s configuration, though I’m open to other root causes such as an incorrect URL path or a server-side block.

Here’s what I need, and I need it fast:

1. Audit the current Rank Math settings and any related server directives.
2. Correct whatever is preventing Google from accessing and reading the sitemap.
3. Resubmit the sitemap, verify that GSC reads it without errors, and confirm that key pages begin indexing again.
4. Provide a short, plain-English handover note explaining the fix and any future maintenance steps.

I’d like the solution delivered ASAP. Familiarity with WordPress, Rank Math, and Google Search Console troubleshooting is essential.