I think we have hinted at that in the private message part of the FAQ. Some things regarding personal communication are not available upon registration. The reason is quite simple - a community about young people who want to get naked has the problem of sometimes attracting the wrong people, so you need to get established in here before the more sensitive stuff opens up. Profiles often contain a bit of contact data, so we want to get to know people before we let them read it.
Also, a community like this thrives on contributions to the public discussion, so we want our members to participate in that. We are not a social network like truenudists or skinbook, where it is all about the profiles, we are a forum community where the main focus is on the public discussion. So keep on being an active member and more parts of the forum will open up for you.