Your device may switch off WiFi during sleep. See our Ports and IP addresses documentation. Your network firewall is restricting communication to vital services. You may receive the message “invalid/untrusted certificate”. Your device has an invalid date, this causes the secure connection method to fail as the date may fall outside of the validity period of the certificate used on our website. As well as forcing another push messaging registration.ĭevice is unable to reach our web server – try accessing via the default browser on the device to troubleshoot. There is a basic diagnostics function within Settings > Remote Management > Diagnose connection issues which can provide you with the status of the connection to our servers and Firebase Cloud Messaging.
There are a number of reasons why your device may fail to communicate correctly.
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