Latest questions about "key retrieval"

We have bought Xante SpeedSetter VM4 with the Symphony 2.0 software. However, we seem to have lost the key to use it. Is there any possibility to receive a duplicate of the key?

I bought PowerDVD 13 but my computer was restored to factory settings. I would like to know how to get my key code so I could go ahead and install and without repaying for it again?

Unfortunately, we have lost the key for our Carpet Estimator program and a new member of staff wants to use it on the laptop it is installed on.

How can I recover the installed product key?