Hello,
Thank you for getting in touch with us.
Attachments are thin content pages that we do not recommend you to keep enabled. We offer an option in the plugin to redirect attachments to the parent post. We encourage you to enable that option from WordPress Dashboard > Rank Math > General Settings > Links.
With that said, some of your attachments are indexed already:
The data provided by Google’s API that we use in the Rank Math plugin is not always accurate or real-time. So, you can ignore that and check manually when you are concerned whether posts/pages/attachments are indexed or not.
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.