I spent like 4 hours trying to setup my Wyze bulbs yesterday and finally figured out why it wasn’t working. Here is what was happening. When I was prompted to connect my iPhone to wyze_smartbulb_apxxx it never came up as an available network on my phone. Why? Because the new iOS has a new privacy setting in the iPhone’s WiFi called Private Address toggled to the “on” position. When it’s “on” it prevents access to certain wireless networks that require real MAC address. wyze_smartbulb_apxxx requires a real MAC address.
Read about it here: How to manage or disable MAC randomization in iOS and iPadOS 14 | TechRepublic