I have 4 contact sensors on the does to my house. In most cases, 8 soon not get notified when a door closes. Checking the wyze app, it says the for is open, when clearly it is closed. I verified the light blinks when closed. The battery has been replaced.
It is quite frustrating. Is there something else I can check? At times I thought maybe the open, close was too quick. So I open a door, wait secretion seconds, then close. No notification, and the app days the door is still open even though I just closed it.