You don't. Once you claim to have a certain birthday, they won't let you change it. This rule is pressumably in place for the protection of minors.
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yes there is a way cuz i got muted for being underage but i found out a way to change it but i cant remember
to change your stats on runescape all you have to do is level up.
there is no way to change the date of birth on aqw only one way is to make new account sometime they will realse it
There is no editor for Runescape. The only people that have the programs to edit or change Runescape is Jagex.
If you need to change the date of birth on your account then you will need to contact the Moshi Monsters Customer service team. Their email is helpme@moshimonsters.com.