my iPad says my storage is almost full. When I go into settings<general<storage & iCloud usage, it tells me that I have used 11.05 GB of storage and only have 1.11 GB available. But when I go into "manage storage" there is barely 1.5 gb of used storage showing. I've tried connecting the iPad to my mac and logging into iTunes as recommended by some, but I can't figure out where I can even view the storage in iTunes. So frustrated. Please help.