Cannot login into Xfinity App

I have been trying for two days now to login into the Xfinity app. Each time Im being told I'm using the incorrect ID which is not the case.I have tried all options email phone and username. I have tried multiple browsers and even different devices. I have been having security concerns since my install and believe the two maybe related as it is blocking me from accessing the app to see my settings on the router. I'm not sure if this is maybe being done internally or from a recent hacking/malware attack.I was surprised to see Xfinity employees can alter the router settings without granted permission also there is no security measures when accessing someone's account over the phone. All you need is their name and phone number to get details for the owners account.