Antwort vom Support: We have detected that this device is currently experiencing a fault code 004, which is preventing the SBV from charging correctly.
Here are the steps you can take to resolve this issue:
Begin by performing a mandatory restart of the device: Press and hold the power button for 15 seconds until the device is fully powered off (pressing any other buttons will not elicit a response from the SBV).
Once the device has been completely switched off, please wait for a few minutes before turning it back on. After restarting, check if the 004 error has been resolved.