(Address is banned) What does this mean?
It means you are banned from joining the channel.
I dont know why cause b4 I regesitered I was fine then when I became a registered user I was banned.
Anything dealing with bans will need to be dealt with through the channel ops (in the case of a channel ban), or the network's contact information (in the case of a network ban). We have no control over bans of any sort. You'll need to contact an op and find out why you were banned.
Hiya, you're obviously quite new. Perhaps reading
this FAQ about channel bans will help you understand a bit more
Regards,