Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
I have checked your URL from my end and it is set to index. It even passes the tests with Google AMP Test tool: https://search.google.com/test/amp?id=RgoLyLjeVomt6mJzFk1SAg
Please try validating your URLs again and give it sometime for Google to update. Let us know of this issue persists.
You can also share some screenshots from your end via https://imgbb.com
Looking forward to helping you. 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.