My Garmin Hrm dual connects to Bluetooth on my phone apps (Strava, HRV elite) but doesn't send heart rate data.

Hello!

My Garmin Hrm dual connects to Bluetooth on my phone apps (such as Strava, HRV elite) but doesn't send heart rate data. I tried troubleshooting in many ways but without success. I connect to the HRM dual through the app and not the phone. I have a Pixel 8 Pro and I already cleared the Bluetooth cache and restarted it and even turned off the forerunner 965 I have so that it doesn't connect to it. 

The interesting thing is that on my iPad it works very well without any issues. 

Any suggestions?

Thank you.