Lost a router

Hello,

I installed two different routers on my iPhone, one in Florida and one in Michigan.

This worked fine until i noticed one of the routers had disappeared from the app.

Now i can't seem to add it back on , I tried using my DDNS and Ip number. Any suggestions on how I can add it back on or find it on the app.

I cannot connect to this router from my Mac using the IP address. 

thanks