Just tested the copy disc function on a homemade dvd. It copied successfully. Power2Go 11/Copy Disc/Copy Disc displays a window where you can see the settings for the optical drive to read the source disc and a max write speed and checkbox for verification. I used DVD+RW.
Tried it on a commercial DVD and got this informational message ! The source disc is protected. This disc cannot be copied.
It is best to start a Cyberlink support ticket for the problem you have as it is not duplicated here.