It would be good to have a button to Delete all sync’ed items, and/or select multiple sync’ed items to delete.
This would be an additional function within Menu -> Downloads & Sync -> Manage, to either delete all the sync’ed items in the list. Or better yet allow you to select multiple items to delete at once, so that you don’t have to go into each item to delete them individually.
That should already be there. Click on the 3 dot icon in the top right. You should get an option to “delete offline content”, which will remove all synced items.
