During activation, Error E001 appears in the Strutt App, indicating that activation was unsuccessful.
Power off the device before opening the armrest.
Open the armrest containing the screen module.
Disconnect all three cables inside, then reconnect them securely.
Use the image below to confirm that each cable is properly seated:

Close the armrest, power on the device, and check whether the QR code appears.
For a video guide, see the Armrest Cable Connection Video below.
Error E001 indicates that one or more of the three cables inside the armrest may not be properly connected or fully seated.