My VA3 stopped syncing properly and heart rate monitor started cutting out for hours and now not working at all after recent update was installed automatically

My VA3 stopped syncing properly and heart rate monitor started cutting out for hours and now not working at all after recent update was installed automatically. After last charge it now only lasts 2 days. Initially was very happy but now entering 3 rd month more and more it is starting To fail. Steps, heart rate syncing , battery, everything is now packing up.