hi new to all this.
seasons greetings
my sons ipod 5 has all of a sudden
1. no email
2. no iMessage
3. no youtube

will not sync up to his itunes
his iPad works with the mobile me / icloud account as well as on the web his icloud account works
when i put in the mobile me account into ipod it says " the certification for this server is invalid. You might be connecting to a server that is pretending to be "setup.icloud.com" which could put your confidential in formation at risk"

Any one any help please