Doesn’t seem to work properly

I bought it and installed it last night and I left it running overnight - I selected my ~/Documents folder. This morning the process was not responsing and I killed it.
Next, because I was looking for duplicate songs, I selected the Music folder. It found some songs, then I realized I didn’t add another folder where I have some music as well, I clicked Start Over, and after adding Music adding the other folder under ~/Documents just doesn’t work. Nothing happens when I select the second folder. Also scanning just Music doesn’t find any duplicate files anymore.

B0gdan about Gemini 2: The Duplicate Finder, v2.3.6