I couldn't agree more @TIMSPORTSFAN
Surely sports MUST be delivered at 1080p/50fps. I can't see a big take up if it's not. No-one is likely to accept it if it isn't on a par with BT's excellent picture quality on their sports channels. Even the BT Sport app outdoes NowTV in terms of overall stream quality.
No the reason being is that I am a BT customer and my contract is with BT not Sky TV or Now TV.
BT should be chasing this for it's customers (the expected date was early 2019) and providing them with regular updates rather than a wall of silence!
On what platform are you seeing this? What steps are you using precisely? I can't find on iOS, iPadOS or tvOS, although I might be looking in the wrong place.
The BT TV app for Android (also iOS). Click on the search at the top right and say search "Simpsons". Then pick now and next then click on a programme and there it is.
I'm only getting C4 results.