if you update from previous version, please Clear Data of the app first.
– install the app from playstore, open it and with adb grant write secure setting permission (as written / instructed in app)
– click Exit from within the app, then enter app setting info for notification, turn off notif for Monitor, Placeholder and Warning (if any)
– open App, then you can use Quick Reboot button, or tick instant reboot option then exit, for Instant reboot on next app click
– To reset / undo Instant Reboot, Clear Data of the app, then the page will show again.
– You can add QS shortcut to launch QuickReboot app with 3rd party app like Quicktile, or put in button/gesture mapper.