Hi Philip,
Art from Salty Brine here.
Make sure you are running version 4.2.9 and that you are entering the registration name and key values exactly as provided to you by SoS. If you still have this issue, try this:
1. Create a text file called reginfo.txt
2. Enter the registration name value on line 1
3. Enter the registration key value on line 2
4. Save the text file in the same folder that you’ve installed FolderMatch into.
FolderMatch will see that this file exists and will read the registration details from here.