Is it an iPad Mini 4 (2015)? If so, Apple broke it with the iOS 15.4 update - you should find that it affects all video players on the device.
You'll find that ITV player also fails on the device, however if you keep trying over and over (15+ times) the video will eventually play. When it works in the ITV player, you'll then find that BT Sport works too - until the device is next rebooted.
We've raised it with Apple (as I'm sure many other app providers have).
Ooooo, I wonder if they've found a way to fix it quicker then?
For us the core player crashes, causing the video to stop. We've yet to find a workaround.
Thanks for the info.
I think the issue is with the app itself. I can access the sport channels through the BT TV app so why not through the sport app.
The BT TV and BT Sport apps are very different in the way they operate, with the big difference being:
The BT TV app uses software embedded within the app to decrypt the video.
The BT Sport app uses native support on the device to decrypt it.
BT Sport is doing it the proper way - the way all apps should operate nowadays. The BT TV app was written that way 8 years ago, and hasn't caught up with modern methods yet - but we're working on it.