I see the same issue with skipped Edge files. I think that the there is a W10 prompt that appears before deleting these files that stops Ccleaner. Here is what I see:
Run Ccleaner analyze. You will see the paths for Edge cache, cookies, history.
Find the listed files using Windows Explorer and do a manual delete.
You will then see a Windows prompt that warns that these are system files, and asks you to confirm delete.
I have found that it is OK to delete these in spite of the so called "system" warning, but I wonder if that prompt stops Ccleaner.