- You cannot prevent your child to login and play at least 15mn (without manually resetting the password in the kid account) - combine this with the fact you cannot prevent changing the password reset email on the child account, and in practice you cannot prevent your child from using roblox - You cannot prevent gift card to be used - There's no way to trace gift cards usage at all - Roblox will remove controls at some ages without warning you - Deleting your kid account is a fight (it's been two weeks and roblox is asking me proof of ownership I cannot give since they don't exist) - You cannot prevent fear of missing out - You cannot control pay to win games - You cannot prevent your child face to be scanned and shared for "age control" - Same for your own face - Probably more...

Oh and don't forget there's absolutely no way to prevent your kid to have multiple accounts, and have a parallel life you know nothing about.