I dont know...It seems most people who uses chatbox are admins/mods mostly and it's weird they would ban you, unless you do something actually horrible...(say like post, child pornography?S:S:S) ?
There was some other people who tried to get back the rights to chatbox and asked about that. Mostly they are being told they are just annoying :/...(dont ask, beats me) I dont think you are annoying so no idea why you go ban in first place. I reckon just try to ask some mod (I saw you did already) and maybe that would help. If not then I guess its a lost case
Why were you asking anyway?
Most of the time chatbox is dead or there is like 1 or 2 people on it,