When an Ethernet Gateway 4 will not connect to iMonnit Online, the cause is usually one of a few things: the gateway is not assigned to the account, it does not have a working network path, DNS cannot resolve the destination, outbound traffic is blocked, or the gateway needs a firmware update. This guide walks through the checks in a practical order. Start at the top and work down. That gives Monnit Support the clearest picture if the gateway later needs diagnosis or repair.