What URL do you get the SSL connection error on? What specific error is it showing if you click on "View Details" or something like it?
While there may be ways to access your control panel without using SSL, we do not recommend using them as if you log in without SSL, you are sending your password in plaintext across the internet, meaning anyone who happens to be looking for your packets (such as someone else connected to the same wireless network as you) will be able to read your password if they so chose.