Power on the device ,and trigger the scan button to scan the below barcode under the hello interface.

Note: You need to wait few seconds after power on to start the scan service.

NInstaller application:

Ndevor/FloatingTouch/NLSBackupRecoverySettings/AdminLauncher/WifiCFGtool/KeyRemap

Note：If not work, please contact technical support to check the device firmware.