It is possible to install Gandi SSL certificates on your simple hosting instance if:
To do this, log into your instance management page and on the Websites table click on the little padlock icon:
Once you have done this, you must paste all your SSL Certificate data (not your CSR, but the CRT)
Then, you need to do the same thing with the private key in the respective field:
If the certificate/private key pair corresponds to the domain to be protected, then you will have finished the process.
The operation only takes a few minutes, and will be ready shortly.
Here is a non-exhaustive list of SSL certificates that are supported by our Simple Hosting offer. If you have a certificate from another provider, feel free to contact our customer support if you would like for us to add an intermediate certificate.