The application is available only for Acer laptops. You can't download and use it for any other computer except Acer. To download it, access the official Support page provided by Acer. Identify your laptop model (see the sticker under the laptop), then download the application from the Applications category. Install it and then see if it detects the files you have hidden or protected. For most of the applications from this category, the recovery is not possible.
If you keep having issues, then I recommend contacting them. They should have additional recovery methods not shared publicly.