The importation seems to be good (I’ve not tested if my VPN is fine after).
In “Certificate”, I select a file that contain the certificate user or server. I use file “.crt” that contains private key, and the key is not protected with passphrase.
In “key”, I use a “.crt” file that contains the key of the server or the user. This key is not protected by passphrase.
Thanks for all.