Cannot access my server using Firewalla Gold in bridge mode and OpenVPN

I have the Firewalla Gold inserted in between the ISP modem and my Cisco network router. The Firewalla is connecting to the ISP modem using DHCP. I have OpenVPN connected to the Firewalla Gold, and I have setup two rules for OpenVPN in Firewalla: both rules allow OpenVPN to have bi-directional traffic to the IP address of my server drive, and the IP address of my WAN.

The Cisco router is the DHCP server for the network.

I can connect to the Firewalla Gold using OpenVPN, however I cannot access my server drive.

What am I doing wrong?