I am using the basic edition of your software. Before upgrading to pro, I was wondering if indeed your software is performing as it should? It shows a lot of recovered files, but when trying to preview on images, a majority of them have a blank preview. Does that mean the files “recovered” are not really recovered and just corrupted?
We can only guarantee the correct recovery of those files that CAN BE correctly previewed. These ones do seem to be corrupted according to your description. Which image format do they belong to? Is the size correct? More details here: /help/recovered-items-corrupted/