can't sign in to app store

We want to help if we can but need more information. To help us answer your question:

• Include the name of the device (iPhone? iPad? Which model?) and its iOS or OS version
• Offer as many details as possible. What happens when you try to sign in at the App Stoor?
• Did your device show an error message? Did it include instructions? If so, what was the message and did you follow their directions? 
• List any trouble shooting steps you have already tried.