Loaded 2.1.30 into my 6700 yesterday. All works except WAN access with my IOS devices. I am using 1.3 with my iPhone 8 and iPad Pro. I have been using WAN successfully with v2.0 since release When connecting I see SmartLink connected (UpnP). When selected it goes back to the "start" page asking me to Tap to connect. This is a Windows 10 machine.
LAN connects work great. I also tried manually forwarding the ports with no joy.