Can no longer connect to remote play through Steam or PS4 from hard wired devices

I am having an issue connecting a hard wired computer and hard wired PS4 to remote play programs. This has worked in the past, then all of a sudden it stopped about a week ago. 

We are able to connect to the remote play programs from a computer using wifi, just nothing hard wired. We have forwarded all the ports recommended by Steam & Playstation. We check UPNP is enabled, it is. We have factory reset the router (with the tiny hole) changed the internet info and tried using different ethernet ports. 

Customer support  "reset the module of the modem" and that didn't work. They failed to follow through with a follow up call to "provision the modem" - IDK what that means!

Thoughts?