I've set up everything, including domain settings, connection, and name server, but when I enter the domain, the gandi.net page appears.

Hi,

I am able to see your site loading on that domain name now. Please check if it is the same for you. (It may have been an initial delay with DNS propagation of information).

If however you continue to see the Gandi.net default page, please try clearing your cache in case it is showing you an older cached version of the site.

Thanks.