Submit a request
doppel Help Center
App bugs, Bluetooth connectivity and firmware help guides.
My doppel is stuck in a continuous spin and won’t turn off
How to reset or update the firmware on your doppel
My firmware update is taking more than a few minutes
I’ve received the error message ‘Fatal: Not supported, on operation start DFU update’
I can't pair my doppel with the app
My doppel unpairs with the app regularly
doppel stops running when I close the app
My heart rate reading fails
My app drains my device's battery too quickly
I keep getting error messages in the app. What do these mean?
I’m getting an error which says ‘Could not cloud sync. Please check your internet connection.’