Band 2 turns off by itself

I own a Band 2 when it first came out. I never had ever wear a watch in my life. Got it to count my steps, runs and calories. I had to replace it 3 times with the band strip ripping. This latest problem is not the strap but the watch turns off. I can’t power it on until I plug it in. When I do that it tells me the battery ran dead but it shows that I’m fully charge. I try to reset to factory but stills did this. Microsoft does not have the Band 2 anymore and can only get store credit. Had anyone has this issue and so did your get it fix?

Really don’t want to switch over to a Applewatch. Don’t like the interface. Just find the Band 2 yo do a really good job for what I wanted it to do.