I'm setting up VPN on the Deco XE75. So far, I'm unable to connect via the iOS OpenVPN app. It keeps failing to connect. I can ping the myVPN.tplinkdns.com (which is my DDNS) but unable to connect....

Yes, that seems to solve the issue. My iPhone can connect to my AppleTV and AVR and other devices now and vice versa.

@ljCharlie Okay, it turned out a bunch of my devices are in isolation mode. That is why my iphone is unable to communicate across different connection type.

@yves_b Yes, I found it. All my devices are there. Here's my iphone and the Marantz AVR.

@yves_b Are you referring to this "Main" network here? I'm not sure where to sort by "Main Network".

@yves_b Here's what I have. The Deco has 4 ports, I think. My Internet line goes into one port, then another port is use to go into my 16-ports switch, one port is used to for my device, and then...