If you're using Gadgetbridge it's worth going into Discovery and Pairing options from the pairing menu and ensuring Ignore bonded devices isn't set. That can be a big cause of not finding a device to pair to
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.
If you're using Gadgetbridge it's worth going into
Discovery and Pairing options
from the pairing menu and ensuringIgnore bonded devices
isn't set. That can be a big cause of not finding a device to pair to