The event is broken. I have done 2 events where I've gotten as far as 14 tasks far but don't get the rewards. I've noticed that sometimes when I start an event, it let's me open it but doesn't activate the rewards, so I'm effectively spending 20 hours over the course of 3 days just to earn nothing. The amount of coffee earned and needed to upgrade cards is extremely unbalanced. Either give us more coffees or lower the amount needed.