Check to see you copied it correctly.
A Mac serial number will not work on a PC edition.
Finally if you registered it before, or have proof of purchase
Look under "serial numbers" and
contact Contact Customer Care
Thanks Gene, I contacted tech support and they said based off the serial number that it was a beta version and they don't support it. The sad thing is I purchased this from adobe and now they won't help me.
If you purchased it from Adobe, it is registered and that would prove ownership as well as the emaill they sent with the serial number.
Sign in with the email and password that you bought it under.
Click on the triangle next to your product and you will see the serial number assigned to you.
You have a valid record and proof of ownership. Try again.