Board Thread:Support Requests - Community Management/@comment-3528442-20190517173441/@comment-1038387-20190517175055

It's in the Terms of Use.

Short version: if you're from the EEA, you have to be 16 (for GDPR). Anywhere else, 13 (for COPPA).

You don't need to block anyone under 13, as a Terms of Use violation is a matter for Fandom. You can report the case via Special:Contact/general, which will lead to termination of the account.