You may try the following:
Uninstall Debut, then delete 3 folders named "Debut" and 1 named "Components" from these locations:
**C:\Users\<username>\AppData\Roaming\NCH Software\Debut\
**C:\Program Files (x86)\NCH Software\Debut\
**C:\Program Files (x86)\NCH Software\Components
**C:\ProgramData\NCH Software\Debut\
**If you can't find any of the folders, just continue.
If you can't find the AppData folder, set Windows to show hidden files and folders with the steps from this link: https://support.microsoft.com/en-us/help/14201/windows-show-hidden-files.
Install the software again and use your registration code.
If the issue is still there you can upload a screenshot showing your results on the following link: https://files.fm/