Hello,
Thank you for contacting the support, and sorry for any inconvenience that might have been caused due to that.
I went ahead and checked the affected page’s view source and I can confirm that the robots meta tag was set to noindex as you can see in my screenshot below:

If you wish to index this on the search engines, kindly make sure that it is set to index. You can do so with Rank Math, please follow this guide but instead of setting it to noindex, make it index.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
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.