Would you please simply click the Register button on the main interface and then copy and paste the code to register it?
If the register button is gone, it would simply mean that you have already registered it.
Or, you can click the About button to see whether it is Registered or Licensed.
Do you mean the Time-limited Halloween Special Offer?
This is a time-limited special offer for WinX DVD Ripper Platinum for 29.95 USD and you can get WinX HD Video Converter Deluxe free.
This giveaway is also time-limited, that is, you can use the free code to get the program registered and it does not mean you cannot use it there after.