Marq Gen2 Aviator Battery life and unexpected turns off

I am having the Marq 2 Aviator since the  New Year. Previously i have had Marq 1 aviator. I am facing an issue that the watch suddenly turns off by itself even if the battery shows 60% or even more. When I try then to turn them on it shows 1% of battery. I am used to battery life on my old watch more than a week depending on the activities. Now it is very unpredictable. Sometimes close to week, sometimes not more than 3days. When I put the watch to charge, the watch automatically turns on but after some time, they switch off by itself. When I turn them on again after couple of minutes the are off again. What is going on? I have tried all kinds of procedures I could find like hard reset, restoring to factory setting end ext. but no result at all. Firmware version in the watch is 10.46 The support page in CZ is dead with now information to the versions of the firmware.