TNT Sports query..not showing up on BT TV

I turned on my TV to watch the Newcastle game but can't see it.

I have
# checked broadband - all ok
# checked bill - all paid for BT Sport (now TNT Sports)
# checked TNT on the old BT Sport and Discovery+ app - all channels fine there
# checked software on BTTV box - all up to date.

Anyone got any ideas?