There is never a monthly charge for SSL. SSL has an annual charge for the certificate. Monthly charges can be for general hosting, the cafe commerce service, and a custom domain name.
I'm not sure why your SSL could have been unlinked. I've turned it off in your account, so you should be able to re-register your ssl using the keys send when you requested the service. If you need help, post your phone number in a reply to this thread and we'll call to help you through the process.