I am using bluetooth, Android App (newest version), using also bluetooth Speed and cadence sensor (in one devcice, SUNDING manufacturer.
the heart rate sensor is working on each ride correctly, means can be paired, working in workout. Then heart rate is zero, not paired any more. Will not heal itself any more. I must disconnect bluetooth on mobile phone then it is working again.
It is not a problem of the sensor. With wahoo fitness app the connection via bluetooth is working constantly all the time.