I can't open home-server.famille-bocquet.fr with my browser.
So http-01 - validation cannot work. A file under http://home-server.famille-bocquet.fr/.well-known/acme-challenge/xxxxxxxxxxxxxxxxxxxxxx must be global visible.
Is it possible to use dns-01 - validation?
Edit: There is a certbot-option:
./certbot-auto renew --preferred-challenges http
Use something like "dns" (I don't use certbot, so I don't know the exact option).