I'll ask here, since Ubuntu Payment support has not replied to the email I sent two days ago.
I purchased the "the Humble Bundle" currently being promoted on the Ubuntu Software Center, paying $6 for it. I made the mistake of using a different email than the one linked to the software center when I registered.
Now, I can't install the bundle. And I can't change the email I am using to login to Ubuntu Software Center.
Any ideas as to how to go about it?