I already have SSL, can I use the free SSL included with the Business plan?

Yes, you may still sign up for your free Dedicated SSL certificate. However, you will not be able to use both certificates at the same time.

Therefore, you have two options to proceed:

1. You can claim your free SSL now, and simply disregard your old SSL. Just be sure you are not paying to renew that old SSL (contact that SSL issuer to be sure).
2. We can install your old SSL certificate for a one-time fee. Then you can claim your free SSL when the old SSL is about to expire. You might consider this if you already paid for an expensive SSL (like a Whois Verified SSL, Wildcard SSL, or Multi-domain SSL).