How can I take my Keynote presentations Database from iCloud?
Sign into https://icloud.com on a web browser and download them to your computer and then sync them with iTunes.


Delete the Keynote app (if you have to and have exported all presentations to the computer or can let them be deleted)
Go to settings -> iCloud -> iCloud Documents and be sure to turn it on and keynote on
Connect to WiFi or allow cellular data for iCloud Data
Install the Keynote app
Open it and wait for the data to flow down to the device