Ooh! same with me!
2 days ago I did Sunder the Elephant when it first came out and it didn’t go through. Initially I was confused, so I did it again (bad, I know…) heh.. .-.
I ended up getting the email twice to my inbox, but not for unlocking the mission, as if I was not a team member (even though I know I was logged in and tried to log in after). It was weird.
Anyway. I just ignored it, but now that you mention it we should probs email a staffer about that… .-.