Nostalrius Begins - Quality wow vanilla realm (1.12)

Hello!

I recently discovered this awesome private server and made an account and started playing today. After about an hour i was disconnected and when i try to log in again i am instantly "disconnected from server"

is there something i am doing wrong? any assistance is appreciated, thanks!

mac

What realm does it say you're connecting to in the bottom right corner of the login screen?