Error Code: 102-2503
Situation:
Online services are not available. The Network Services Agreement must be accepted.
What to Do:
Select the user Mii character from the top left corner of the Wii U Menu and select "View"
Use the on-screen keyboard to enter your NNID password and select "OK"
Select "OK" when asked to review the Network Services Agreement
Select your language
The updated Nintendo Network Services Agreement will display
Review the updated Nintendo Network Services Agreement, tap "I accept" to agree
你是不是协议没同意啊