3. I do not know how to use it

The following is how to use the Data Whitehole.

There is an explanation on how to use the "Help".

1. Select the drive that contains the recoverable data.
Select the drive that has data to be recovered and select File> Data Restore.

2. Search for the removed data.
Click the Search/Data Restore button.

3. Select the file or folder to be restored.

4. Save file or folder.
Click on Data storage path, then click on the drive to save. At this point the saving has to be done on a different driver.