Hi Teresa,
We have checked both the license keys. CF8 license key is correct, however, CF10 license key is an UPSELL license. That's why, you are facing the issue. Can you ermail us at cfinstal<AT>adobe<DOT>com OR cf<DOT>install<AT>adobe<DOT>com. We will take care of this and revert to you.
Regards,
Anit Kumar