Welcome to our Community and thanks so much for your first post - sorry that you seem to be having some issues with watching Sky Sports via the app. Do remember that in order to watch Sky Sports you do need to use the Sky Sports App - not the TVGo app.
Once you have downloaded the Sky Sports App, you will then need to log in by clicking on "sign in as VirginMedia" then pop in your MyVM username and password.
Thanks for coming back tom us, when watching sky sports this needs to be via their app, you sign into this at the bottom by selecting the virgin media button at the bottom. you can find more information around watching sky sports via a browser here .