Photos diappeared from Photostream Album after upgrade to iOS7.

New made photos are not uploaded to Photostream.

Photos made on other iDevice (iPhone4) are not downloaded to my iPad2.

Have checked all settings, it still does not work as it used to with iOS6.

A very strange thing I noticed, when I make an screenshot in an app or game. the screenshot will not be added to Phostream.

(on previous iOS versions it did get added)

When I view the previous taken Screenshot with the Photo App, and then again take a screenshot, it does get added to Photostream.