Can’t get rid of old ads.txt

I took over this site and am trying to replace old ads.txt with the one associated with my adsense account. Even when I created a new account and linked to it in the plugin, it still goes to the old ID tag. Not sure what I’m suppose to do. I’ve tried clearing cache, and looking for the old ads.txt file in cpanel but cant find it.

The page I need help with: [log in to see the link]