HRM3-ss & Run dynamics 2 display

Hello all

I have HRM-SS & I was using it on my Fenix-3 to measure the vertical ratio and vertical OSC. Once I bought my Fenix-6 i tried to connect it & works successfully ( reading heart rate) however i cannot get my vertical ratio & OSC data any more . I tried several things like deleting and adding the sensor on the watch , adding run dynamics 2 on running display & update the watch with latest software 8.1 but still i have the same issue .

Any idea how solve this issue ?