Good evening,
Please re-download the google authenticator app and re-scan the QR code or enter the time based code to obtain the token to login to your account.
If you do not have access to the QR code (the bar code you scanned when turning on authentication) or the time based code, then a ticket must be created to begin the process to turn authentication off from your account.
Please see https://forum.xat.com/requests/open-a-ticket/?do=form and request a ticket for "Lost Authentication" - enter your xat username, ID, and put the e-mail associated with the a