Q: im having problem with app downloading and updating while downloading showing a message "app coul not be download at this time"

Hi Omeroliyil,

When you try to download or update an app and you get the message that the app could not be downloaded at this time, is that with all apps and updates?

I don't see that there was a system issue at that time

Apple - Support - System Status

So please see if there is some other connection issue.

If you can’t connect to the iTunes Store - Apple Support

If it is only one app that won't download and all others download fine, then see

Report a problem with an item purchased from the iTunes Store, App Store, Mac App Store, or iBooks Store - Apple Support

Take care.