Qt login issues

I recently installed Qt after upgrading to Windows 10. I put in my username and password and the password came up as being incorrect. The program told me to check the Login tab in the settings in order to make some kind of change to my login information. No changes to login information can be made under the settings tab. Meanwhile, the program just keeps trying in vain to log in in the background. I uninstalled the program, deleted everything I could find in the registry, then reinstalled, but the program still has my incorrect login information stored
What I'd like to know is, which exact items in the registry do I remove in order to be able to log in with a different username and password? Thank you