Hello same here,when the cmf app is open watch works well except calls from facebook messenger and WhatsApp don’t work, after clearing recent apps from the phone watch disconnects only from the cmf app, if you control the bluetooth in the phone settings you will see connected watch.
Not receiving calls from Facebook Messenger/Whatsapp is a real problem.
I hope that all the notification and Bluetooth connection problems will be resolved as soon as possible.
Thank you.