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.
If your entire site is set to noindex, it is most likely that this option is enabled on your WordPress dashboard > Settings > Reading

If so, uncheck/disable that option then clear your website’s cache and let us know if the issue still persists.
I hope that helps.
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.