It was determined that SCP-173's likeness is under a non-commercial contract with SCP. This currently is problematic for both the game itself as well as one of the trading cards.
One of two things is likely to happen over the next few days, pending information from Steam:
1. DoS will be made Free-To-Play and SCP-173's likeness will remain in the game. In which case transactions should be refunded.
OR
2. Pricing will remain the same and all art assets featuring SCP-173's likeness will be replaced with new assets.