Hey, guys!
Thank you again for your effort and kindness!
As you said, the software company claims that files are "undeletable" but let me tell you that you can dissapear any file or folder encrypted with this (self-claimed) secure application just by running Registry Mechanic! As simple as that! No hacks, no weird techniques! It's happened to me before and, as I told you before, I just restored a backup...
And as I haven't used any other new application I though that CCleaner might have done the same thing that Registry Mechanic and therefore disspeared the files...
But know you guys tell me that, in any case (and bearing in mind I didn't even use the 'issues' section), CCleaner may have just erased any shorcut to my missing folder (which didn't even have a shorcut).
So I guess I'm done!
I have already written to Folder Lock because it's actually their fault... It's not that I'm just a guy who doesn't know what he's doing with his computer so they'll have to answer for this... I'm very careful with files I need to work and I would never had destroyed them.
So, THANK YOU ALL ONCE AGAIN! You've been extremely kind to me!
And it's definitely a new lesson learned...
THANKS !