Hello,
We apologize for the issue you are facing with the noindex setting on your eCommerce category. It seems that despite your configuration, the category is being set to noindex.
To troubleshoot this, please ensure that you have not inadvertently set the noindex option for this category in your Rank Math settings. You can check this by navigating to the Rank Math settings in your WordPress dashboard and reviewing the Titles & Meta settings for the specific category.
If everything appears correct there, it might be helpful to check if any custom code or filters are affecting the robots meta settings for this category. You can refer to our guide on how to set noindex for specific categories here.
If the problem persists, please reply to this ticket, and a human agent from the Rank Math Support team will take over and assist you further.
Thank you for bringing this concern to our attention!
Sources:
How to NoIndex All Posts in a Category » Rank Math
Buongiorno
ho fatto le verifiche. La pagina rimane in noindex anche se la metto in index
potete verificare perché penso sia un bug
Grazie mille
Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
Please head over to your WordPress Dashboard > Rank Math > Titles & Meta > General, and from there disable the Noindex Empty Category and Tag Archives option and see if that works for you:

Let us know how it goes. Looking forward to helping you.
Thank you.
Ho provato varie volte a togliere questa opzione e poi metterla. Non cambia. Il problema rimane
Hello,
In this case, we might need to take a closer look at the settings. Please edit the first post on this ticket and include your WordPress & FTP logins in the designated Sensitive Data section.
Please do take a complete backup of your website before sharing the information with us.

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:
https://wordpress.org/plugins/temporary-login-without-password/
You can use the above plugin in conjunction with the WP Security Audit Log to monitor what changes our staff might make on your website (if any):
https://wordpress.org/plugins/wp-security-audit-log/
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.