Hello,
Thank you for contacting Rank Math and I’m sorry for any inconvenience this issue may have caused you.
Please activate advanced mode of 404 option, so that we can know from where this URL are being referred to. Are people just typing in these slashes or is it referred from another posts / page with that link structure. Once we have those information, we can see the reason and fix the issue accordingly.
You can read more about it here: https://rankmath.com/kb/monitor-404-errors/#advanced-404-monitor
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.