Yes, I see blue connected message briefly in gadgetbridge apploader but then the IDE quickly logs "no activity" and "closing connection" as seen above. What kind of activity it expects?
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
The Web IDE. I just tried it here with Gadgetbridge and the Web IDE on Windows 11 and it works fine for me here.
Are you 100% sure you copied the UUID correctly?