Recovery the cert.ca

Hello,
I have a cert for my server with yunohost upon it. Maybe I should delete all the folder which contains the key but now I can’t download a new authority of certification SSL with the interface (Ca.crt button). The problem is that the site (https://www.geocerts.com) tell me that the certification common name and host common name doesn’t match. I prefer tell you that I use OVH for my name domain and Scaleway for hosting. But it seems not very important, isn’t it. So How can I regenerate my certification as a good one ? Shall I delete all my cert with ‘rm’ ?

Have you looked into using a Let’s Encrypt certificate ? https://yunohost.org/#/certmanager / https://yunohost.org/#/certmanager_fr

You’re the most powerful user I have ever met on this forum. You see I’m very lease about your response. Of course you’re the boss Captain. My problem doesn’t exist anymore. Thank you so much ! Have a nice day !