on 10-09-2022 10h56
I've added a longer description of the problem, the fix, and the explanation to this thread:
https://community.bt.com/t5/BT-Sport-on-TV-Online-player-or/bt-sports-app-on-windows/m-p/2251245#M33...
Note: we had a warning shown in the app for a month before it was shut down.