Are you moving when you try? I have trouble pairing things up until I'm actually on the bike and moving and then it all just appears. No amount of shaking my shoe or spinning my wheel seems to be enough, I have to be fully engaged. This is for both my head unit, a Wahoo Bolt, and any of the various computer based apps. It does get frustrating sometimes as both Zwift and Sufferfest want all things paired before you can get started, even just to look. I guess you can bypass, but then I can't get either to pair without fully exiting.