Hello,
Thank you for contacting the support, and sorry for any inconvenience that might have been caused due to that.
We report only those 404 URLs that actually return a 404 status code and, upon accessing, which takes to the default WordPress 404 page.
It is likely that some bots might have accessed these 404 URLs, which is why the user-agent is not shown.
Please note that we only report the 404s. We do not have information on how or why they are generated.
Kindly follow the steps from our Knowledge Base article to fix the 404 errors:
https://rankmath.com/kb/fix-404-errors/
A decrease in rankings can be due to many reasons, and one of the most common reasons is that Google, multiple times in a month, releases algorithmic updates, and these updates hit many websites causing a temporary decrease in rankings.
However, could you please check the coverage report under your Google Search Console account to see if there are any errors shown, that might be causing the issue?
Please let us know how that goes. Looking forward to helping you further.
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.
