Well I don't see why you did reinstalled Mohaa, because the screenshot folder should have appeared once you clicked on Compatibility Files.
I found this on my own so I cannot help you with any website talking about this issue.
What you could have done if it's still not there is pressing the Alt key to bring up an other toolbar and select tools/folder options/view, then click on "show hidden files and folders" just in case it would have been hidden.
Now that you've reinstalled everything, I suppose that it deleted the screenshot we took on you, so you cannot send it to us, even if you get your folder back, so I don't know what the decision will be in your case, because of this problem.