A test authorization for vps12001.serveur-vps.net to the Let's Encrypt staging service has revealed issues that may prevent any certificate for this domain being issued.
Fetching http://vps12001.serveur-vps.net/.well-known/acme-challenge/7OdsNElXXDAnlhf6SnSHsSbWPcsjUGy9TmoCGuhm7KM: Timeout during connect (likely firewall problem)
vps12001.serveur-vps.net is currently affected by Let's Encrypt-based rate limits (https://letsencrypt.org/docs/rate-limits/). You may review certificates that have already been issued by visiting https://crt.sh/?q=%serveur-vps.net . Please note that it is not possible to ask for a rate limit to be manually cleared.
The 'Certificates per Registered Domain' limit (50 certificates per week that share the same Registered Domain: serveur-vps.net) has been exceeded. There is no way to work around this rate limit. The next non-renewal certificate for this Registered Domain should be issuable after 2021-08-03 23:22:38 +0000 UTC (1h58m0s from now).