Can't use without money! – Rized Color by Number Book Review

I've seen my cousin use this app before, and she told me to try it. So I did, it says it want me to try premium, but I don't want premium. And I can't get out of it. So it is basically trying to force me to pay. I'm mad about this bug...plz fix!
Review by AndrewH721 on Rized Color by Number Book.