All my devices are offline!
The most common problem when all devices go offline is that an earlier failed restart of the service has left the BlockEnabled file. Follow the steps in new Site Admin:
If the problem persists, check that your firewall is not blocking traffic from your devices.
1. Go to Site Admin › Devices › Listeners
2. Click on the device Listener
3. Press on the Test connection button.
If a test fails, verify your firewall.
If you still have problems, check our device troubleshooting guide.