Why am I banned?

[Dilaj]

Hello. 

I just redownloaded MTA, I've played MTA for nearly 3 years.
I can't join to one server, it says that i'm banned by MTA Reason: BYE

I do not know why is that, can you help me please?

[Tut]

Hi @Dilaj

Please create a new appeal containing your MTA serial. To get the serial run MTA, press F8 and type serial