Hello,
Thank you for contacting Rank Math and sorry for any inconvenience caused.
Do you have a robots.txt file saved in the root folder of your site?
If so, please delete it, since Rank Math generates a virtual one with your changes, so to make it work, you have to remove any robots.txt file you have there.
Once you delete the robots.txt file, Rank Math’s virtual robots.txt file will take over and you will be able to edit the robots.txt file without issues.
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.