Most likely you are no longer in any member groups. This could do with either the game you played no longer being supported, or membership being removed due to inactivity. Just apply under a game that you currently play and then you'll be able to view game sections. Make sure to mention your IGN when applying for a membergroup.
My guess is you were removed from the Aion usergroup due to quitting, possibly because the leadership wants to maintain a clean/active roster in order to better micromanage the division. Just apply to the "XoO Members" usergroup. All members should be in that group whether or not you actively play anything with us. It'll give you access to the game forums (including Aion forums)
