Hello,
Thank you for getting in touch with us.
That is completely normal since we changed a lot of files during this update of the plugin.
You can see the entire changelog which is consistent with the notifications you are getting via WordFence.
https://rankmath.com/changelog/
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.