I haven't been able to finish the last three timed quests, and that's with using gems to get energy and speed up waiting. It feels like they only allow you to finish them if you pay. I wish they had a better system as far as the three stats goes. What's the point of locking choices behind a stat level if we have no idea what will be required and when, especially when there's no way to back out of the choice and build up the stat.