Hello,
Thank you for contacting Rank Math and bringing your concern to our attention. I’m sorry for any inconvenience this issue may have caused you.
We’ve checked your website using the site:
operator, and your pages are already included

In this case, you should check your Google Search Console > Indexing > Pages section to determine any issues reported on your URLs that may have prevented your site from being indexed:
https://support.google.com/webmasters/answer/7440203?hl=en
You can share the screenshot of the report here so we can check it as well. You can upload screenshots using this tool and add the link here.
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.