Hey, was hoping somebody could help me out:

I've used Sony VEGAS Pro X 15 for half a year now, but recently built a newer and better PC and intended to install it here instead. Just to be safe I deactivated my old PC on my MAGIX account, and began installation on my new Windows 10 PC. Problem is, once everything seems to be installed properly, I'm prompted with this popup window (attached image). I'm not given any opportunity to re-enter my product serial # nor log in with my MAGIX account throughout this process, which then ends with this window.

How can I download VEGAS and begin using it again?

Thanks so much for any advice and help!