Hello,
Thank you for contacting Rank Math.
In order to avoid duplicate content issues, you can set up Canonical URL with Rank Math and we don’t set Canonical URLs by default.
The “Grayed out URL in” Canonical URL field you see is is a placeholder. You can change that URL to point to the main source of your content.
To get more details on that, please refer to this article: https://rankmath.com/kb/how-to-change-canonical-url/
We hope that helps. We are here if you need us again.
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.