Hello kaistudio!
Thank you for your question regarding installing an SSL Certificate for your website.
As long as your SSL was keyed to the CSR on our server you can just email the SSL CRT and CA-BUNDLE files to [email protected]. You will need to verify the account with the last of the credit card number or the full current AMP password. For more information on third party SSL's please see our article on Installing a Third Party SSL.
Best Regards!