Automatic Updates...

hey,

Just upgraded all our devices to IOS 7 hoping to make use of the Automatic Update of apps. ..hoping 🙂

Its turned on by default but I still made sure by turning it on in settings on each device.
So far it worked on one device but not on the rest. No idea why.

My questions,

1. must someone be signed into the app store on the device for automatic updates to work.

2. If I have app installs blocked through restrictions will this effect the auto updates

Is there anything else Im potentially missing.

Any help much appreciated

john