Dia2 batter net 18nom a

whenever I try to log in from a fresh install it says “you were disconnected from battle.net. please reconnect.” and I’m reading on forums this is due to people being banned? My cdkeys are registered to my battle.net account, is there like a staff member or something that could check to see whats up? I haven’t played in years and last I played I wasnt banned so this doesnt seem right.