I don't have difficulty knowing which buttons to press. I just wanted to now what to do at that screen (which is to wait). Said symbols are also kind of distracting and unnecessary.
Next question: how long do I have to wait for?
Look, I take it you either have a bug or you're closing the game at the wrong time. I'm leaning towards the former. You should not have waited at all, there are two dialogues that last 1-2 minutes. Try downloading a new version. If after 5 minutes, this window does not close automatically or you have a black screen all the time, write again.