The issue is that you don’t have a LAN interface on the fusionhub in the same range as DHCP segment.
If you look at the status you’ll see that the entry shows the server IP as x.x.0.2 (the WAN IP) with the client as x.x.12.3
What this means is that the remote client device can route LAN to WAN fine (or LAN to PepVPN), but there is no Layer 2 segment between the remote clients and the remote user vpn.
Add a LAN interface to the fusionhub with an IP in the same DHCP range (x.x.12.0/24) and it will come right.
As an example here is my Fusionhub Status:
