Hi @Rabk
Is it a Day Sports Pass and asking you to buy a Pass when clicking on any of the Sky Sports channels ?
If so, try starting the Day Sports Pass on a Smartphone, Tablet or PC then stop the stream, jump back to the main page of the NOW App.
Then jump back over to the NOW App on your Fire Stick.
Or are you seeing a QR scan code when opening the NOW App on your Fire Stick ?