Son started to play destiny 2 in October and he can't log into the destiny 2 app, saying there's no gamer tag linked to the Microsoft account, which we have spoken to Microsoft and they have said to contact you. Every time my son tries to log in he gets the same message as shown on the image" Authentificatiom error. We are unable yo sign you in with your xbox live account. Please visit xbox. com and sign in to verify/update your xbox live about . This error usually indicates that your Microsoft account has no xbox live gamer tag, or that your account must be updated in some way, such as agreeing to an updated terms of use"