Purchased in Nov of 2020 and stored until recently in basement.  When I went to put it for the season the battery was dead.  I understand it needs to be charged which I did for two days.  When I turn it on, I get solid white, then green and then red.  I also noticed it’s missing from my sensor list in the app. Like it has been deleted.   If I click edit button. Nothing happens.  Can you please help?  Thank you.