The new app update seems not to work well between tacx flux s and windows. When I “add a device” prior to a session, the tacx shows but blinks yellow and basically doesn’t work. I’ve reinstalled, reset etc everything several times but no joy. The trainer does work with tacx app and Iphone wahoo app. Any thoughts welcome 
Have you turned off BT on your phone? Maybe the trainer connects to your phones BT first.
I’ve tried everything. (I think) 2 hours of off and on, delete and reload. Frustration levels high. Maybe it’ll resolve in time for tomorrows FF. 
or maybe not.