Total Newbie needs help routing Youtube TV traffic outside of the VPN

I am a total non-tech newbie, but can follow detailed instructions.

I have a Night Hawk R8500 that has been flashed with DD-WRT v3.0-r37015M kongac (09/23/18).

I also have an ExpressVPN setup on the router, and I believe (I don't know how to confirm this) all our internet traffic is currently going thru the VPN.

I just subscribed to Youtube TV.  When I try to watch TV thru the Youtube TV service it works on certain devices, but gets blocked on others and complains about my location being different than my home location.  I'm in Phoenix, and my Express VPN server is in L.A..  It's this discrepancy that the Youtube TV service doesn't like.

I have read that I should configure my router to route ALL Youtube TV traffic around the VPN (bypass the VPN).  That sounds simple and exactly what I want to do, but I cannot find the details anywhere as to HOW to do this.

I did some pings to find out the Youtube TV website's IP address range.  It appears to be 172.217.x.x

My physical network setup:

PCs and Android TV boxes--->R8500--->Belkin router--->Internet

The R8500's address is 192.168.1.1

The Belkin router's IP address is 192.168.2.1

I set the connectivity up this way based on a 6-year old (outdated?) video I watched claiming to show exactly how to accomplish this specific VPN bypass on OpenVPN.  Here is a link to that video: https://www.youtube.com/watch?v=eBI1aPZ9cC0

I tried to do exactly what was instructed in the video, but it did not work. I kept the 2-router setup for now, but can easily remove the Belkin router if necessary.

I'd be happy to take screen shots of of anything that would be helpful.  ANY help that you can give me would be hugely appreciated.

Thank you!

 wi