I accidently logged into wrong github user for activating GitHub Copilot. I am not able to switch and continue to validate against the same user. Neither restart nor reinstall plugin helps here.
Took sometime but figured out. Posting the answer here hoping it will help some one.
All you have to do is , go to C:Users<username>AppDataLocalgithub-copilot and remove apps.json, restart the IDE. It will prompt again to sign in at Github.