We have temporarily closed our DLC: Starter Pack purchase. (http://store.steampowered.com/app/207240
Purchasing the DLC is unavailable for a week from now.
Currently we're working on transferring the database from steam to our own one. We expect this will prevent from hacking threats and losing purchases.
For same purpose, in-game store purchase will be temporarily unavailable after today's patch (v.0.9.7).
We will come back with new DLC that offers better than before.
Sorry for inconvenience and thank you for your support.
See ya'll in the game!