KIOSK MODE LOCKDOWN require/asks the following permission to properly works.

SET HOME DEFAULT
Kiosk Mode lockdown is an Homescreen app with an embedded Browser. You could use this app to create public kiosks, digital signage and any other kiosk-like solution that prevents your end-users to misuse your own Android device.

ACCESS_WIFI_STATE
Read WiFi state and reload when internet becomes available.

CHANGE_WIFI_STATE
Change wifi state when app opens following app settings.

ACCESS_NETWORK_STATE
Required to react on internet availability

EXPAND_STATUS_BAR
Programmatically expand status bar.

MODIFY_AUDIO_SETTINGS
Change volumes levels from JavaScript interface.

NFC
Read NFC Tags to open links in webview.

RECEIVE_BOOT_COMPLETED
Needed for auto start functionality.

BLUETOOTH
Required for Bluetooth Printers and other devices integration through JavaScript interface.

USE_FINGERPRINT
Required to protect settings with password.

REORDER_TASKS
Prevent recent tasks opening from end users.

ACCESS_FINE_LOCATION
Required for devices tracking on the Remote Management Console.

WAKE_LOCK
Required to keep the Kiosk screen always on.

BLUETOOTH_ADMIN
JavaScript interface.

CAMERA
Required for QRCode Scan.

BILLING
Required for billing on the Google Play Store.

READ_EXTERNAL_STORAGE
Required for read/write settings on sdcard.

SYSTEM_ALERT_WINDOW
Prevent access to status bar

RECORD_AUDIO
Required for HTML integration.

WRITE_EXTERNAL_STORAGE
Required for read/write settings on sdcard.

READ_PHONE_STATE
Required for device identification on Remote Management Console.

WRITE_SETTINGS
Brightness setting from JavaScript interface.