Apparently the Num + key on the keyboard doesn't work, isn't there a way to permanently delete the game and then download it again? (and sorry for the inconvenience ;w;)
You need to just delete "conf.ini" file then, it is located here: "C:/users/username/AppData/locale/Archtower"
Or if you can see text you can go to audio/video settings and change lowrez option, that will autoscale your UI again.
