How do I change my email address to get the Sketchup update?

I went to the site to see if I was eligible for the update. I entered my serial number for my Sketchup Pro 2014 and the page said i was and to click the button to get my license reissued. I did that and it told me I would be getting an email to follow through with getting the update. However it was being sent to my old email address. One I no longer have access to. How, or where do I go to change my email address so I can continue with the update process?

Thanks for any help on this.