Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
THose keywords are the keywords Google Search Console detected you are ranking for.
To fix that issue, you could try to clean the website cache, the Search Console module (in Rank Math) cache) and if it doesn’t work, you should try to reauthorize and authorize again the Search Console integration in Rank Math.
To clear the Search Console module you should Delete the cache and then Update it manually:

Looking forward to helping you. Thank you.
Hey there.
Yesterday I did all of those three things:
1. Cleared website cache
2. Cleared Search Console
3. Re-authorized to Search Console
Still showing 0 keywords. Could it be that my website is THAT bad? 😉
Hello,
Thank you for contacting Rank Math today.
Is it possible that you have another plugin that is downloading Google stats such us Google site kit installed?
I can also suggest that you login to your search console and check the performance tab for the keywords that your site is currently ranking for and do a comparison.
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.