First problems start with signing up

First problems start with signing up, keeps telling me every single username is taken. I’m trying ridiculous usernames that nobody could possibly have and still doesn’t work. When you get past that and actually sign up free 10 spins for signing up we’re nowhere to be found I had to ask them where it was and all they said was it’s one per customer even though it was my first account they just didn’t understand and were pretty useless.