Help with apex Jr network round 7!

[windcoast reefs]

Okay so I bought an apex jr 2 years ago to help monitor my tank, but I cannot remotely access the controller.

It works fine in the network, but not on 3g.

So here is my setup.
There is my main router that runs into the house (can't disable wifi since other people use it) which the branches to my router. My apex is hooked yo my router.

Now I have port forwarded through the main router (my router is as well) and the port is open, but I can't seem to connect my apex.

Any suggestions?