To watch Sky Sports channels you need to download and use the Sky Sports app, not the TV Go app.
You sign in by clicking on the Virgin TV UK icon and entering your My Virgin Media username and password
If you need to manage your Sky Sports Devices then log into
Make sure it's http and not https.
It's best to do this on either Edge or Firefox browsers as there is often an issue if using Chrome.
Any problems either try an incognito window or clear your browsing history