I do have an „Polar H10“ and an „Garmin HRM-Run“ and do not find them in the activity device list. The activity device list only contain my „Forerunner 945“. The hint with „running dynamics“ in case of the „Garmin HRM-Run“ is only valid for running activities and not for strength, yoga or other activity types. Until this week I have never had a problem connecting my Garmin HRM to Zwift. About 2 years. This week I have decided to try a multi-day ride. Simply hop off the bike while keeping the Zwift app running. On the second day all of my sensors said they were disconnected. I was able to reconnect to all except my HRM. E63pWCs.