I have used c cleaner for 10 + years. I can not retrieve these files. The side by side configuration is incorrect.
You need to expand on what the problem is. What files? Ccleaner doesn't, by default, touch documents or downloads. What is a side by side configuration? What do you mean it's incorrect?
Also what version of windows and ccleaner (don't say latest, it means nothing, please give a version number located at the top of the ccleaner window.