Sorry I thought you were asking after buying all Season #1 and Season #2 packs what you can use your free pack to exchange for.
As for the challenges, we stopped as we saw a decreasing number of participants. We have plenty of people using the software but only a handful of them are participating in such activities, which is understandable. We should come up with a way to organize this in a meaningful way and we can get things rolling. I’m open for ideas for sure. 🙂