Garmin HRM 3 wont connect

Anybody know why my brand new Garmin HRM 3 wont connect to zwift? It works with other devices. I have tried 2 different Ant+ antennas without any luck. My Garmin HRM Tri connects straight away

Hey @Tommy_Lokke have you tried troubleshooting your ANT + pairing? We have an article that can help: https://support.zwift.com/en_us/my-ant+-signal-is-dropping-(cycling)-SJdW01bHX

Hi Vincent - I have the same HRM problem - Zwift finds pairs with it but says it can’t detect a signal -
and it looks like you’ve got the answer but your link doesn’t seem to work. Any ideas? Many thanks. Phil