Hello,
Thank you for contacting Rank Math, and sorry for any inconvenience caused.
I checked the sitemap, the images are already added in the sitemap.
Some of the images are also indexed in Google, you can check using the site
operator on Google.
Please exclude the sitemaps from caching by following this guide and resubmit the sitemap in the Search Console.
https://rankmath.com/kb/exclude-sitemaps-from-caching/
I hope this helps.
Looking 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.