Issue with gesture, WHR and Sensor version 0.00

Hi there, I've multiple issues, hope you can help me.

First thing I realised, green lights of the heart rate monitor stopped working, then the gesture didn't illuminate the screen anymore, and watch stopped counting steps.

I checked on system and WHR and Sensor firmware version says 0.00

Any idea how to solve it? I've seen many threads with this issues but can't find any clear solution, thanks