My "work" is family video's. Nobody even would have the slightest idea how to get to my site unless I tell them, that's why protection is of no concern to me. Like I said, it's been up for over 5 years, I use coppermine as well and have over 10,000 pictures which are fully commentable. Nothing but family comments.
Now, as far as the loader is concerned, I did visit, I did get a license, I did install and it doesn't load anything.
Here's what I get trying to encode the config.php file
Encoding, please wait...
C:\phpshield.loaders.windows\config.php - file is already processed by phpSHIELD 
1 files, 0 processed, 1 errors
And I still can't get past the shield error on install.