I'm myself have been a "victim" of many softwares, since I had to try out many new utilities for both my personal and professional use.
I tried out this software after a reader of my blog chiprang.com contacted me saying: "I'm unable to uninstall Free Hide Folder by Cleanersoft.com since i've forgotten my password! Please help!"
On installing the software, I too faced the same issue after I pretend to forget the password that i set :)
I tried the usual process of uninstalling softwares from Windows Control Panel, but that process too fails as the software keeps asking me to enter my FHF password. This is how i finally managed to uninstall Free Hide Folder safely from my system. I hope, like my friend, you'll appreciate this tip. If you have any problem in following this process, do let me know.