can you try: "Factory reset" in the app, exit it with the "swipe up & kill" and see how that works for you? Are you trying to login with "theb0red1" ? Please note that every dapp which "uppercases" your first letter in the username, please lowercase it!
"Just turned dark and do nothing" - I have not seen that yet. I have some iOS devices here and have no problems running...
Lets get this fixed for you!