Nostalrius Begins - Quality wow vanilla realm (1.12)

I recently installed Nostalrius to an old laptop (I usually play on my desktop) to mess about on during my lunch break at work. However, I cannot get passed "logging into game server" after selecting Nostalrius as my realm from the realm list. It can see the number of characters that I have and allow me to authenticate but after that I just get kicked back to the realm list over and over. Any help would be very much appreciated.

Thanks.

/bump

Any advice at all would be great.