One of our Android devices in kiosk mode started showing a Network Error on the kiosk screen. The Wi-Fi itself is working, but the device keeps dropping offline in Hexnode and the last check-in time becomes old. The router shows that DHCP had assigned an IP and MAC to the device, but the IP is sometimes unreachable. Restarting the access point helped briefly, but the device disconnected again later. The device is locked in kiosk, so we cannot easily open Android Wi-Fi settings locally. We also want email alerts whenever this kind of disconnection happens. What is the best way to fix this permanently?