Running Dynamics not working with HRM-Run Sensor.

Hello, I have just purchased a Fenix 5 Plus and I'm coming from an old Fenix 2 which already had running dynamics with HRM-Run (old version).

I am having this issue, the HRM-Run Sensor records HR but not RD.... did anyone found a solution for this? Do I have to return the device?

I have seen many threads on this, but they are all 2 years old and really not solving the issue. Sorry to repeat again.

Thank you!