Do you offer shared SSL or free SSL?
Acorn Host offers free SSL certificates through AutoSSL and Comodo. Just put https:// in front of your domain to use it.
If for some reason it is not working on your account, it may be because you previously installed a paid certificate. AutoSSL will not replace a paid certificate if it expires, but if you contact us we can remove it so AutoSSL will work and provide you with free certificates. These free certificates renew automatically before they expire. You can check your AutoSSL info in Cpanel under "SSL Status".