I corrected the problem on LTE by opening the C4 app, changing the IP address to a bad address, trying to connect (which fails), then changing the IP address back and connecting. This worked for me. Again see the thread as follows: http://www.c4forums.com/topic/14682-unable-to-connect-to-myhome-over-vpn/
Control4 access via VPN
in General Control4 Discussion
Posted
This worked for me too.