humm. I had someone come over and set it up about a year ago and was worknig with no issues till 2 weeks ago
To access to the dvr once connected on openvpn app .....
Type this url on web browser..
http://10.8.0.1:8089
*Install openvpn
*wget https://git.io/vpn -O openvpn-install.sh && bash openvpn-install.sh
http://yourserverip/list.php
thats all he left me with