Adding Mullvad CA Certificate for OpenVPN.

[grimelog]

I'm stuck at setting a certificate for signing my client instance. I have the Mullvad certificate, which OPNsense is not letting me import under System --> Trust --> Certificate, as I do not have access to the private key. I tried importing it through System --> Trust --> Authorities; but, I cannot set that for OpenVPN client. I tried creating my own CA to see if I can sign a certificate using the imported Mullvad certificate as an authority. But, under "Sign a Certificate Signing Request" I do not know what to paste in the CSR file.

How can I properly import the CA given by Mullvad to get OpenVPN working?

[grimelog]

Found the setting under advanced settings.