I've been playing this game for over a year & a half now, and I've really been enjoying the game. That being said, this most recent event glitched as I unlocked the second to last building once I automated it. I burned 200 gems and lost out on 12-15 hours of X2 bonuses for that second to last building & my gems were completely wasted. It completely handicapped the last 36 hours of the event. The event ended without resolution to my notification of this issue via email to the support team.