Ipad 4 and iexpandable 64gb flash drive

Not the “Apple” store, but the “App” Store. You access it from your iPhone or iPad. There is only one; it’s called SanDisk iExpand Sync.

You did buy the SanDisk iExpand flash drive, didn’t you?

Edit: I am going to suggest to the Mod that this thread be moved to the more appropriate SanDisk iExpand board.