Cannot download apps from AppStore [English is not my mother language]

I cannot download any app from AppStore(it shows the downloading process in AppStore and it shows the icon of the app in setting>General>usage) but I can't find it on the home screen and I cannot open it through AppStore. Does anyone know how to fix it?

My iPhone is:
iPhone 4s
iOS 7.1
Try with a soft-reset on the device. Settings/General/Reset/Reset All Settings and try again. No data will be lost (other than passwords).