Tacx Training App not saving rides

Hi,

I just finished a 1h45min ride (Unibet Tietema Rockets - Jalon to Orba Valley (2025)) and the app did not allow me to save the ride. I was forced to discard the acitvity.The trainer was connected; Demo mode was off. This is ... not good.  Can anybody tell me how to avoid this? Is there any way to get the activity back?

Thanks

Bernhard