Hello, I am new here.
I come to share with you some information about the VPN configuration after several searches to connect this client to my OpenVPN create with pivpn.
For the latter the user name is useless therefore it suffices in the file "vpn.ovpn" to add the line
askpass /vpn/vpn.pass
and create a text vpn.pass file with only the user password, I only say
this comment is therefore not a search for a solution but seeing that I have been looking for I said to myself that I could give my solution if ever someone was looking for the same info, see you can add it to your documentation
Sorry for my pitiful English I'm French x)