Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
I checked your sitemap and the URL you shared is included in the sitemap just fine, here is a screenshot: https://i.rankmath.com/yB5XRc
Since you have caching enabled on your site, please exclude all your sitemap URLs from being cached. You can do this in WP Rocket by heading to WordPress Dashboard > Settings > WP Rocket > Advanced Rules and add the following in the filed for URLs to never cache: (.*)sitemap(.*)
Once done you should clear your cache then do the following:
1. Head over to WordPress Dashboard > Settings > Permalinks
Hit the save button once.
2. Go to WordPress Dashboard > Rank Math > Sitemap Settings
Hit the save button once.
That should fix the issue.
If it doesn’t, please do let us know so we can look at this further.
Hello,
We are super happy that this resolved your issue. If you have any other questions in the future, know that we are here to help you.
If you don’t mind me asking, could you please leave us a review (if you haven’t already) on https://wordpress.org/support/plugin/seo-by-rank-math/reviews/#new-post about your overall experience with Rank Math? We appreciate your time and patience.
If you do have another question in the future, please feel free to create a new forum topic, and it will be our pleasure to assist you again.
Thank you.