"The confirmation email we sent to firstname.lastname@example.org was returned and we’ve locked your account to protect your Firefox data."
Im trying to unlock my account, so that i can try syncing
Google has been having some outages. The Gmail server may be rejecting messages to your account from the Firefox Account server, or server response may be very intermittent.
I suggest waiting until we hear more from the Firefox Accounts team on whether they can do something on the back end for all Gmail users affected by lockouts (once Gmail is fully back to normal). Until then, sorry!