Why do I need to confirm my email?
Sync does not turn on without a confirmed email: the email with the code is the only proof that the account is yours and that access to it can be recovered.
The code arrives right after signing up; if the email did not arrive, you can request it again from the app or the website. Check your spam folder — emails from a new sender often end up there.
Until confirmation the app works in local mode: spoofing, search and history are available; only the list of places is not synced.