Fixing the "Unable to connect" issue upon login.
Going to make this as short and simple as possible.
1.) Navigate to the WTF folder, then open the "Config" file.
2.) Within, you should see, "SET locale "enUS" SET realmList "logon.warmane.ru"
3.) Change the ".ru" to ".com" then exit and save.
4.) Back up to the main WoW folder, then navigate to the Data folder, enUS, then "realmlist"
5.) Right click on the "realmlist" file and go to "Properties"
6.) Under "Attributes", if "Read-only" is checked, uncheck it, press "Apply", then exit.
7.) Open the realmlist file. You should see "set realmlist logon.warmane.ru"
8.) Change the ".ru" to ".com" then save.
9.) You're done! Go play!