One possible reason is that Contacts will not be synced if you have not indicated your date of birth on your Nokia account. Ensure you have specified your date of birth and that you are older than 13.
- How do I delete or remove my Nokia account?
- Can I send and receive phone calls on my Nokia device while Nokia Email client is synchronizing new email?
- What are the 'Mail Options' used for in Nokia Mail?
- How do I send a message to more than one recipient via Nokia Mail?
- How do I start using Nokia Chat from the web?