Board Thread:Support Requests - Getting Started/@comment-86.122.47.51-20180828175100/@comment-9605025-20180828181116

What has already been said but with links.

Many countries have special laws that apply to minors and/or how information about minors is handled. Instead of having to deal with all of that, some companies simply restrict their services to those who are not covered by these regulations. This age is 16 for those in countries covered by the European Economic Area (EEA) and 13 for everyone else. Legal requirements (specifically, the European Union's (EU's) General Data Protection Regulation (GDPR)) are also why Wikia recently removed the MonoBook and Uncyclopedia skins despite a significant amount of objection from the community; even from users in the EU.

The age requirements are clearly stated in this section of the Terms of Use and you can view this section of an old blog that explains the United States' Children's Online Privacy Protection Act (COPPA).