Lost on port forwarding with pfSense and VPN

So, I have qBittorrent running in a container on a machine in my network. That machine heads out through an OpenVPN gateway on my pfSense firewall connected to Proton VPN.

My Proton VPN client username includes +pmp. I copied the info out of an ovpn configuration for a set of servers that had the double arrow to indicate it supports P2P traffic. I have a paid account.

I have qBittorent listening on a random port (say 6666). The container exposes port 6666 over the default bridge network.

I have a port forward rule set up on the NAT Port Forward page that maps any source IP/Port coming in on the VPN interface over TCP/UDP to the VPN address on port 6666 to the host machine IP on 6666.

I have a rule on both the VPN and LAN interfaces allowing IPv4 TCP/UDP traffic from any source to the host machine over port 6666. (I'd like to have that locked down by gateway, but I opened it up on the LAN interface in trying to get this to work, same reason I have UDP enabled as well).

There is no traffic and no connections through either rule. I'm obviously missing something basic, but I have no idea what. Any ideas?

EDIT: I made these changes in the Advanced settings:

• Enabled "Reannounce to all trackers when IP or port changed"
• Set the VPN IP in "IP address reported to trackers (requires restart)"

I then restarted the container. Doesn't seem to have made a difference, though.