To not let my 9 year old play Roblox

[Popfan]

My 9 year old DS is banging on about wanting to play Roblox. I've said no as I'm concerned about the chat function. There are restrictions for under 12s and apparently it can be disabled but I still feel worried. What do you all think?

Let him, there is restrictions for over 12 too, no numbers can be posted

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It just needs policing/monitoring/controlling properly. My kid loves it.