First of all, one advice. Don't use more than 1 antivirus on your PC. It could fight with each other and blocks could be everywhere. If you are not familiar with Mcafee, i would not recommand to use it.

Nobody will watch for a 28 minutes video, so just give your topology with IP-addresses. It seems you are going to connect AC1200 via LAN-port (not WAN) and disable DHCP. OK, fair enough, it will be just AP. Don't forget to change IP-address on LAN, so you will not have IP-conflilcts in your network. Just check, what IP-address you receive on PC, seems like that man in video used Static IP, while you keep DHCP enabled.

"No Npcap Loopback Adapter" - seems to be windows update thing, which doesn't mean anything special, just you do not have Internet. So, if you are confused with this, then you can just check connection by your non-windows phone.

You topology is pretty easy to be fair and there should not be any problems. If you have Internet, connecting directly to R600VPN, then you should have it via AC1200 with no problem.

Thank you,  it appears the the real problem was a bad C1200.  I just receveid a replacement and will configuring it this weekend.  Thank you for replying. I was having a very hard time and turned out the router was faulty.

Moon Dog