Re: delete duplicates
Just noting: AVG primarily is a product to PROTECT your PC. Deleting duplicates is a totally unrelated thing.
As already noted, there are many freeware or shareware 'delete duplicates' or 'manage duplicates' programs available for download on the usual download sites. That gives you much more control about what you choose (in terms of price, functionality, user interface).
It seems you selected a paid one. Others prefer a free one. Still others (including me) don't use any, because they have a good enough way (or anyway they think so!) to manage the contents of folders to limit the number of duplicates to a level they can manage using tools like Windows Explorer (comes with Windows) and Ultrasearch (a free utility to find files by name). Or they don't mind about a few GB of duplicate files on a 500 GB disk.
It's all up to you how to manage your system.
The more choice, the better. Using a subprogram of an antivirus suite isn't necessarily the best solution for you. And now you've selected the best. I'd say your situation has improved.