The Nova Riata Crisis was an event similiar to the Terradoxia Crisis. In which several Nova Riata memebrs were involved in a scandal in which these players used mutlis and exploits to get resources and money. A few players were banned by Alex including the leader PooBall, and a large amount of cities and money was deleted. The exploit was said to be patched but some similiar actions have occured.
According to a screenshot sent by Pooball, this exploit was sent to Alex a few months prior to the Scandal. Alex seemed to do nothing and disregarded it.