I actually found out that my Avira antivirus had moved it to quarantine, that's why it disappeared, but I restored it, thanks for the reply anyway!
This morning I went to open the WiseFolderHider program to access a hidden folder, but this message came up: "The item 'WiseFolderHider.exe' that this shortcut refers to has been changed or moved, so this shortcut will no longer work properly." It was working just fine until now. I did not move or delete the shortcut, and I'm the only one who uses this PC. What the heck happened andwhat do I do? Please tell me I didn't lose all of my hidden files.