@MrGrnEgz 

I would suspect either the DNS or the security software.

Also be sure firmware is up to date.

Thanks for replying.

When you say it might be the DNS, what does that mean? I see the DNS stuff in the DHCP section as well as a section for Dynamic DNS, but neither one of those has settings which make sense tome to be affecting the website. Can you go into some more detail?

As for security software, I assume you're referring to the software on the desktops, but that wouldn't be affecting the TV app at all is my thinking.

I have verified that the firmware is up to date.

@MrGrnEgz 

some routers have security features so check your router.

DNS can be set in the router, device, your ISP, VPN, ....

most times, everyone uses the default one from the ISP. Mostly used for preventing children from going where they should not. Companies use them to control where employees can go. 
 

Also clear your browser history and cache as that can cause this issue also. 
 

@ArcherC8 got it. What should I set my DNS to?

@MrGrnEgz 

You can try different ones that work for you. Google or cloudflair would be the ones I would try first.

See https://www.youtube.com/watch?v=1lkAUaEWLXI for a review/use of Cloudflair.

@ArcherC8 Ohhh, I get it now. Thanks for the reminder :)

Ok, so I changed the DNS to Google's 8.8.8.8, etc and rebooted the router, but when I look at the status the DNS isn't the 8.8.8.8. Instead it's 75.75.75.75, etc (see the images below). Why would that be?

@MrGrnEgz 

The DNS can be set at different levels.

See if your PC has it set to that. 

Also power cycle your PC and try.

May need to clear the DNS Cache (google to see how for your PC).

@MrGrnEgz 

Just looked at the emulator for your router.

Go to advance, network, and advance tab if it has one. You may need to change it there.