Panoramic Wifi App Not Working

Hello, 

I just moved to a new house. I exchanged my old modem for a new one today, in-store. Previously, I was able to access my network and manage my passwords, who was using my wifi, etc. Once I was done setting up the modem and my wifi was working on my phone and laptop, I went onto the Cox Panoramic Wifi App to check if I could change my name and password. Sure enough, the app said my router was offline and I couldn't access any tabs. 

I contacted (2) agents of Cox and no one was able to help me resolve this issue. I would like to be able to manage my network on my phone, like I use to. If anyone could help me, that would be great. 

Please..