we have recently discovered that anyone who registers under the age of 13 gets some kind of message that tells them they gotta fax something signed by a parent, but doesn't say where. at the moment, such user accounts have to be activated manually. we are attempting to correct this issue as to ensure that more users continue to bring activity to the forum.

thats not good..
make a mesage saying:

put ur bday at over 13!!
xD

I think you have to disable COPPA
In ACP>General>User Registration settings
at the bottom

wow that was useful lol