I imagine you're fine charge-wise then...
It could be related to the app (or other widgets that are installed). Although I just installed it here and it works great...
What if you do Install default apps in the App Loader (which will wipe everything and start again). It should work then?
Install default apps
If you want to debug it, I'd go to https://www.espruino.com/ide/ and connect to your watch, then long-press BTN3 to re-launch the clock, and see if any errors get reported to the console
I can't use BLE since it is turned off on the bangle and I can't access the launcher.
© Espruino, powered by microcosm.
Report a problem