Same problem here.
Running Win10 on Alienware Alpha. All drivers up to date.
BLE works fine with Rouvy but Zwift does not recognise the internal bluetooth adaptor.
So it seems Zwift is the problem here. 
Same problem here.
Running Win10 on Alienware Alpha. All drivers up to date.
BLE works fine with Rouvy but Zwift does not recognise the internal bluetooth adaptor.
So it seems Zwift is the problem here.