It appears every few times I open the app and the usual android back button doesn’t make it go away, and there is no cancel button. What you have to do is toggle the toggle, then the button will change to “do not back up” and then you can press it. It annoys me how easy this makes it to accidentally turn on backup.
Honestly I’m done with Google Photos, I mean I get that it was free and that I shouldn’t complain about that, but I already pay with my privacy, so why pay money and have my data abused everywhere I go?
I now have a home server (second hand mac mini m2) with PhotoPrism installed