Re-install of Win7 lost Advast!

Hello:
Re-install of Win7 lost Advast! Pro
What info do you need to re-activate?
Using free V for now.

Avast Pro Antivirus
Valid (Expiration Date: 4/11/2016)
Available device count:1

Just install pro and use your paid license for it.

Took a bit but I figured it out.
A little more info would have been nice.
Anyway Ill be changing providers as soon as subscription runs out.