The files have been encrypted which means that now they're practically unusable no matter the procedure you take to decrypt them. Even if the software is installed again, it will not recognize the files. SysTools generates a specific ID for the files and folders it locks, an ID that now is not recognized. You will need to contact the developers of the applications because it's possible that they have a tool for this process. Access the contact page and use the email to contact them. Leave all the folders on your computer and don't format anything unless you receive their response to the situation.