Really sorry about that -- there was a snag in the case when someone has multiple github emails and no bugzilla account.
It was fixed by <a href="https:&#x2F;&#x2F;bugzilla.mozilla.org&#x2F;show_bug.cgi?id=1223590" rel="nofollow">https:&#x2F;&#x2F;bugzilla.mozilla.org&#x2F;show_bug.cgi?id=1223590</a> and that should be going live this week (last weak was a rarity, no code push).