@Andrewmk what about inside the Bangle.js app? What did you do? Just go to "Find Phone" and click on "on" and proceed to the settings app? There was an update to the Gadgetbridge Android app today, but I still have the same issue. My phone cannot manage to find the Bangle.js, unfortunately. What's even more irritating that it found an MiBand, and I found an old MiBand in the drawer.
But not the Bangle.js lol. I just cannot manage to make it show up and I have no clue what's wrong.