Revoke Administrative Permissions Manually
You have to revoke administrative permissions before you uninstall the ISL Light application. If you chose to let the application keep the permissions after ending a session, you can manually revoke them in the device settings.
Open the "Settings" application.
Navigate to "Lock screen and security" and select it.
Scroll down and select "Other security settings".
Tap "Device administrator".
Tap "ISL Light Remote Control".
You have now revoked the administrative permissions for the ISL Light application.