Hello i can help you here.
If you buy the domain name from the ACP then you can buy the SSL certificate from us on the ACP but if you buy the Domain name from outside of FM then you will not get the SSL certificate from us as we have no power over your domain name.
If you Don't buy a domain name at all and use the one that comes with your forum on the day you made it then you can still buy a SSL certificate from us.