As a native English speaker, I don't see anything objectionable either. The only thing I can guess at is OP thinking that mandatory means you have to do it, ev

As a native English speaker, I don't see anything objectionable either. The only thing I can guess at is OP thinking that mandatory means you have to do it, even if you have no interest in playing Minecraft again, but you could read the same into required if you wanted. Or maybe they think this page is being read by kids, and not their parents, and that kids won't know what mandatory means? But you're supposed to be 13 to have an account, and I'm sure 13 year olds know the word mandatory.