Digi WR11XT Can't connect to Port through ETH

I can connect to the modem (Admin) through the external IP, but I cannot connect to my device through the Ethernet port of the modem. My device is operating on port 1000. I try IP:1000 but I get “Can’t establish a connection.”. I have set up port forwarding…am I missing something?

Thanks for your response. I am on Rogers with a static IP.
Thank you,