Documents and Data(iWork) won't sync from iPad to iCloud

Hello,

Syncing between my iPad, iPhone and iCloud.com worked perfectly, until a couple of months ago!

I have an iPhone 4s, and iPad 1. I installed all iWork apps in both of them, and syncing was perfect since the beginning of iCloud until about a month ago.

I made several changes in all files in my Numbers in iPad. Thus, ALL of them have the upper-right up grey arrow, like it wants to be synced. the sync stopped in all iWork apps, nothing is being updated/sent/received. Other iCloud sync works excellent like Photostream or contacts.

I will list all the things I've done

Yes: I have my "Documents & Settings" iCloud sync "ON"
Yes: all other syncs are great, iCal is great, and Photostream is great.
Yes: All iWork app iCloud Sync is toggled "ON"
Yes: I turned the iPad off/on hardware and software
Yes: I toggled all the mentioned toggles off/on in all orders
Yes: my iWork apps are updated
Yes: my iPad is updated to the latest version 5.1.1 (iOS 6 is not available for iPad 1)
No: I don't have a Mobile Me account

I have searched for hours on a way to solve this issue, without an answer and it is very frustrating. Please help me u awesome comunity!

Thank you,
Mazen