OpenVPN oddities?

[nerd]

I am halfway through setting up a ProtonVPN connection (using OpenVPN) to route a specific VLAN through this VPN.

So far I have configured the ProtonVPN/OpenVPN and am able to connect.
What I don't understand is:

1) if this VPN is connected, my other traffic fails/gets interrupted before I even configured any rules to use this VPN. To post this message I had to disconnect the VPN.
Looking at gateways, 2 OpenVPN gateways  (IPv4 en IPv6) have been created automatically, but both have preference 255 while my normal WAN has 254 which should have preference, right?

2) With this VPN active I get 2 Firewall: Rules: OpenVPN options. Adding rules to one does not influence the other so they are not the same. It seems the system has automatically created one of these 'interfaces'? Giving my interface another description changing one of these.
Even after disabling my OpenVPN interface 1 Firewall: Rules: OpenVPN remains.
Where is the other -default one(?)- coming from?  I only have a single OpenVPN interface (opt5, ovpnc1).

[nerd]

Nobody to comment if I am being an idiot or if this is expected behavior, where it is coming from?

[chemlud]

Actually nobody knows what you have done to configure your tunnel, so nobody can comment on this ;-)

In general debugging VPNs is a special kind of hell you have to go through with the help of documentation and interwebs guides until it works :-)

[nerd]

Thank you for the reply and clarification why nobody responded :)

All I did was configure the CA certificate of the VPN provider (protonVPN) and then configured an OpenVPN client as explained at https://protonvpn.com/support/pfsense-2-5-x-vpn-setup/ up to step 4. Seemed to be pretty standard stuff.

in short:
step 1: add ProtonVPN rootCA
step 2: configure OpenVPN client
step 3: assigned ovpnc1 network port to interface ProtonVPN (opt5)
step 4: noticed that I had 2 FW rule interfaces and that my clients internet traffic was cut of.

and here we are .. hoping this bit info can help explain my VPN oddities?