Bulb install issue

I just received my bulbs and cannot get them to install. I follow the prompts, sitting on 2.4ghz network (i even “forgot” the 5ghz to ensure it would not switch to that during install), cycled the bulb on/off (even waited a couple seconds between off/on to let the bulb fully brighten) and then once it begins to pulse, I swap over to the bulb’s network, go back to the app and watch the 150 second countdown all the way down to zero when it tells me it has timed out. Over and over. I’ve tried with both my Android and iOS devices. This happened in my closet for my first install and now the hallway. No dimmers. Frustrating. Any tips?

Here is a thread with lots of advice: