Firstly, please pair doppel to the app.
Now, you will be able to check whether your doppel is running the most recent firmware (the code that runs the motor) on the ‘Settings’ page on the app. Press ‘Update’ if it shows your firmware is out of date. It’s important that your doppel is running the most recent version of the firmware.
It can take a few minutes to update the firmware so be patient, and do not close the app while the update is ongoing.
Closing the app when an update is taking place can stop the touch gestures from working, and can sometimes stop doppel from buzzing when it’s placed in the charging base.
If you do accidentally close the app whilst doppel is updating, go back to the ‘Update firmware’ button on the ‘Settings’ page of the app and start the process again. It should then connect and update as before. You may need to try this more than once.
You can reset the firmware at any point. This is the equivalent of turning doppel off and on again and can help with some troubleshooting issues.