is there a way to delete all app data iCloud drive

I have tried several times to delete an app's data through the manage storage settings of iCloud. Most of the apps disappear from the list once I have chosen to delete all. One app (Deliveries) will not however. I have opted to delete its app data on my iPhone and on my mac--every time the 12.8Kb is still listed. It won't go away. Any help would be appreciated; I am really looking to wipe all app documents and data at once now, but that feature seems to be missing post iCloud drive upgrade. Thanks.