DHCP Errors for new Jails and VMs

[SimpleJoe]

I have been having some problems with the network side of my TrueNAS build (TrueNAS-12.0-U8.1) whenever I create jails or VNC into my VMs I get network issues (these may or may not have the same problems). From the best of my knowledge, this seems to be after I got OpenVPN up and running following Techworks video.

I first noticed having no internet access on a Linux VM I've had running for quite sometime and then I could not access any of my videos through Plex. I have had success in the past deleting and reinstalling a fresh Plex jail, however this time I can't even get it to finish creating the jail giving:

Code:

Error: PlexServer had a failure Exception: RuntimeError Message: + Acquiring
DHCP address: FAILED, address received: 0.0.0.0/8 Stopped PlexServer due to
DHCP failure Partial plugin destroyed

When using the default DHCP enabled settings:

Or:

Code:

Error: PlexServer had a failure Exception: RuntimeError Message: pkg error: -
pkg-static: http://pkg.FreeBSD.org/FreeBSD:12:amd64/latest/meta.txz: No
address record pkg-static:
http://pkg.FreeBSD.org/FreeBSD:12:amd64/latest/packagesite.txz: No address
record Please check your network Partial plugin destroyed

When specifying a static IP both within or outside of my routers DHCP range as well as trying all combinations of vnet_default_interface and IPv4 Interface settings as I've seen in a few other threads.

I'm not quite sure what is happening and why it sometimes works. As for other information, I'm not sure what is needed but from the few other posts I've seen, this is my global network config:

And for general topology of my home LAN:
Telstra Router on 192.168.0.1 and a DHCP range setup for 192.168.0.80 - 240
TP Link switch connecting to the rest of the house on 192.168.0.160
TrueNAS box is on 192.168.0.182
and the OpenVPN server on 192.168.1.0

Any guidance would be greatly appreciated,

Thanks,
SimpleJoe