How to Connect
Download client, apply patch, set realmlist, create account, launch with Wow.exe.
Download Client
Use a clean WotLK 3.3.5a client. Extract it into its own folder and keep it separate from other private servers.
Apply Patch
Download the latest patch and place it in the same folder where Wow.exe is located.
Set Realmlist
Put realmlist.wtf inside Data\enUS or Data\enGB. Make sure Windows did not save it as realmlist.wtf.txt.
Create Account
Register on the website, then use the same account name and password on the WoW login screen.
Use Wow.exe
Start the game through Wow.exe only. Do not use Launcher.exe because it can overwrite or redirect files.
Select Monarch
Choose Monarch in the realm list and enter the world.
Check that realmlist.wtf is in the correct Data language folder and is not saved as a TXT file.
Use Wow.exe only. Launcher.exe can reset files and break the custom patch setup.
Re-download the patch and place it in the same folder where Wow.exe is located.