if ur sure that u regisered the account(appears a little link to warrock and a message comes up sayin "u have completely registered ur account" or somethin like that...) then u must be banned...but i dont really see how they could detected some way of u being banned without login in...so im pretty sure u just did the registration wrong...
PS: ppl dont say he's got ip banned, coz they dont give it out for long time...and ppl have said loads of times they have it but when they have a solution to their problem, its nowhere near a ip ban...and hw bans let u login first then after about 30 sec a message comes up sayin that the hardware is perm banned like when u ban an account...