Can't login to App Store with iPhone
The problem.
I have iPhone 5s, iOS 8.3. My Apple ID doesn't work with App Store, I can't make updates or buy new programms.
I used 5 different iPhones & iPads with the same Apple ID before. A couple of weeks ago I set up Family Sharing and created new Apple ID for this iPhone 5s. The access to App Store from this device was terminated. The new Apple ID works for iCloud, Facetime, Apple.com, but I can't login to App Store in Options menu with iPhone. I see the full list of my devices at iCloud Family sharing menu. All other devices don't have problems with access to App Store.
I used Apple IDs that work for other devices well to connect but with the same results. Apple IDs and passwords remain gray in Options menu. There are no restrictions turn on for that device. I tried to contact Apple service but they listen my problem and didn't come back with an answer.
Could you help me to solve the problem?
Thanks in advance.
iPhone 5s, iOS 8.3