Nostalrius Begins - Quality wow vanilla realm (1.12)

Today i tried to login and game said that my account was banned. I have a couple of questions.

Why my account is banned?

How do i appeal?

I believe i did nothing wrong and didn't break any rules of this server.

Account name: Protegos.

Dear Protegos,

your accounts has been banned for Gold Selling/Buying.
please contact the admin on the forum Daemon via PM.

Thanks for unban guys! In summary: Don't buy expensive items via c.o.d. Close thread pls.