Account banned and don‘t know why

[lcxm31]

Greetings,
Today when I login the WOW and found that my account was banned.
I don't know why it happened.I spend a lot of time on this account.
Did I break the rules or what? Tell me why please.

Account ID:Weiwei123
Character name:Magels


Best Regards

[Nathrizyr]

Greetings,

Your account has been permanently banned for gold trafficking.

Regards, GM Team