Thanks for using the forums to get this issue with your TV GO App service looked into, I am sorry if this has been causing some frustration. I would be more than happy to look into this for you. I can see its been a few days since you last posted about this, can I ask if you've managed to speak to the faults team about this in the meantime?
If not, that's fine 🙂 I just want to ask some questions in order to understand the issue a bit more -
Does the App failed to work on all devices including a desktop PC or laptop?
What devices are you currently using to log in?
Are you able to login to your online account with no issues?
Have you tried uninstalling and reinstalling the app to see if this rectifies the issue?
Please let me know the answers to these questions so I can help further.