I'm positive this is related to the MyQ system, as I was having this problem on and off for a few weeks. I disconnected the MyQ gateway for a couple of months and didn't have a single issue. I thought i'd give this system another try, so I changed my home router password, reprogrammed the opener and remotes, changed my Chamberlain account password and opening number, and wouldn't you know it, after a week, my garage door opened by itself in the morning, and then again in the evening, and stayed open all night while I was away from home. My phone dd provide a notification the door was open, but I didn't have it by my bed, and so didn't see the message until the morning. I am very lucky I live in a low crime neighborhood, so that everything was still in my garage when I returned. How is it possible that this is happening?