Apple Watch connectivity issues with nautical equipment

The gym I use has Nautical equipment. I have previously successfully paired my watch to the treadmill with no issues.

I tried to pair today and it connects and even allows the choice of workout (I pick indoor run) but then instead of starting the workout on the watch, it opens up the Fitness app as if to select a workout.

The run is going on the treadmill but with no calories/HR shown (as it will usually get this data from the watch). When I start an indoor run on the watch from this state, it starts a separate workout that isn’t matched up to the treadmill. I tried two different treadmills so I think it’s a watch issue.

series 9, newest OS as of 23.11.2024