When I I go to settings ,clear private data,then I tap on clear data a small box pops up at the the bottom and says, ..Some of your private data has not been cleared... ,I have all of the boxes checked and normally use private mode ...any help would be greatly appreciated if that doesn't work that's kinda serious ,one might think ????? Thank you

Sry I can't seem to get a screen shot only up for about 2-3 seconds...