Nostalrius Begins - Quality wow vanilla realm (1.12)

It says I'm in a test realm and Auto disconnects me. How can I Change the realm? All the threads ive looked at offer no solutions.

If you are connected to the test realm and having the instant disconnect as you finish logging in and authenticating and all that:

Just delete the Folder you unzipped and unzip it again and be sure to choose PvP Server when you sign back in the next time.

Open up your config in the WTF folder, find the realm name in there and change it.