"Done" just doesn't "feel" right. If you're going to put English words on any buttons it should be "Dismiss". I know it sounds like a stupid gripe but "done" has a weird finality about it that "dismiss" doesn't.
Not sure why there is even a button. In [Redacted] there is just the x to close the popup and I see the x in your screenshot, so just removing the button should be fine.
Well, tapping anywhere outside the box dismisses it. And there is the problem. No one would ever say "Tapping anywhere outside the box dones it."