Can't sign in error: serial number already used?

 I can sign in on Corel website, and product registration is in my account.  But can't using corel draw X7 sign in for updates or any other function needing web activity.

I'm thinking it's because I registered my first installation at the web site, not during program installation. So every time the X7 program tries to log in it reads the serial number and won't complete the built in registration part of the installation process.

Does this make since? I think the installation automatically registers the serial number. But because I already registered it before installation I am having this problem.

How can I correct this.

Also my X7 installation has bar code, but doesn't have QR codes function???