OpenVPN clients on Wifi can't work with SwissVPN NordVPN , Protonmail-VPN etc.

[tuatara]

This is the case:
I've created WIFI for guests (like in a restaurant or cafe).
So it is an Internet set up for "guests" (but they are using regular WIFI Access Points connected to OPT 1..
it is a new OPNsense Firewall.... So the WIFI users want to connect to A VPN provider on the Internet.
The problem is , depending on the guest they might want to use any provider like NordVPN, SwissVPN , Protonmail, Kaspersky etc etc.
The problem is that I don't know which VPN service provider they want to access, but in most cases they use OpenVPN.
I did some testing with SwissVPN and if I use a PC on the LAN interface I can succesful setup VPN and I am able  to use it. (it is very slow though).
But from the WiFI it is possible to set up the VPN connection, but it is impossible to use it. ..time outs, disconnects access for 1 or 2 seconds etc.. The Wifi connection is done via NetGear R7000 Nighthawk WIFI routers, configured in "Access Point" mode
The OPNSense firewall is connected on WAN via DHCP on a DSL modem of the DSL Internet access provider

So my simple question is, how can I provide ANY/ALL VPN access for my users via WIFI ?

Can anyone help me with this?

[tuatara]

sadly no answer,  but I found a way to solve the issue.

It might be a good idea to add an item to the documentation on how in general you can provide Wifi users access to a, or to their preferred VPN access provider on the Internet. I was now able to allow any OpenVPN connections to Internet for WIFI users. But it took me some days. There is lots of documentation on how to set up OPNsense as a OpenVPN client or a OpenVPN server, or set up a fixed OpenVPN tunnel, but that is of course something completely different.
I don't feel confident to write down how I did this, hopefully a more experienced user can do this in a proper way.