My smart light bulbs will not connect anymore. I used to be able to connect them, but now they don't work. I can get them to blink slow or fast. They obviously connect to my phone because they stop blinking soon after I start the connection process, but then the timer counts down to zero and it says connection failed. I don't know if this is a problem with my bulbs or my app, but I'm not pleased since they used to work and now don't.