You must be apart of that group in order to login. Once logged in, all default settings for that group will be applied to your account. These settings will be removed once you log out of the group. Your Apps, Overlays, and Notifications will be overridden with the group's settings.
Please provide your username. An email will be sent to this account using the email address associated with your account. Click the link in the email to recover your account. Always change your password after recovering your account.