That might be for serveral reasons :
When you create a new user its a kind of a "Mini Format" in your PC system so many files or programs are missing from the new USER and thats why we created the new user in the first place, because in the old user there was something that was blocked by Xigncode.
So to resolve your current problem lets try something.. If you are launching the game through ignite just close ignite and run the game through the launcher
""C:\AeriaGames\AVA\NWZLauncher.exe"" Its probably there but it might be different in your PC
Try to log in and if this do not work for you reply me and i will be here to assist you further !