Ensure that World of Warcraft Classic is not running, also, ensure that Battle.net is not running as well.
Open your Dugi Guides installer, click on the Settings button and ensure that your Dugi Guides website username and password is correctly entered and then click on the Okay button.
The Dugi Installer will do another scan, as it is doing that, ensure that you see Welcome, wubbitss
If it doesn’t already start downloading, click on reinstall button.
Run the game and check to see if it’s fixed the issue, if it hasn’t, please report back and we shall try something else.