I have literally done everything on the list of comments and also reset my watch. Still no developer mode showing on my watch, I have the Ultra 1, it makes it incredibly hard to test my app without having a physical device, I need to test the vibrations too. Beyond frustrating, unsure why Developer mode needs to be hidden away in the first place as it's clear enough from all the pop ups etc. any person who doesn't need it isn't going to accidentally activate it.