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.
Can you tap outside the popup to make it go away? Or maybe swipe it down? Agree that Back should be enough, how annoying!
What if you close the app through drawer, and then relaunch it?
No, you cannot.
Ugh.