Port fowarding problem with ATT Router (5268AC Model)

Not sure what I am doing wrong here. But I am trying to get my port forwarding to work with my Octopi and noip.com.

So far everything has gone pretty smoothly, I have followed this video here. https://www.youtube.com/watch?v=jUX_sc5B9hw&t=447s

But my problem is I am getting "the site can't be reached" error when I try going to my noip domain.

I have an att router that basically just goes into my linksys, the ATT router is a 5268AC Model and the linksys is a WRT1900AC.

I set up the reserved ip for the device on my linksys router. And then setup both HTTP and SSH single port forwarding on my linksys.

But where I am running into problems, is I think the ATT router is not letting the incoming traffic reach my linksys. I tried adding port forwarding on the ATT router (which is a huge pain) but when I go to create an application for port 80 it says I will lose TV service. Probably because that utilizes port 80, I have no idea.

Any help would be greatly appreciated.