Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
I checked the source code and in fact, it has the robots set as no-index. Just to be sure, you didn’t set in Rank Math your tags as no-index, didn’t you?
If you didn’t, we might need to take a closer look at the settings. Please edit the first post on this ticket and include your WP logins in the designated Sensitive Data section.
It is completely secure and only our support staff has access to that section. If you want, you can use the below plugin to generate a temporary login URL to your website and share that with us instead: