Match-fixing is a big problem in the Asian Esports scene. They are probably checking if this game had any abnormal and suspicious betting activity.
They shouldn't offer such big limits on a low-tier Overwatch game tho. Really stupid of them.
no they dont check it even the eu games are not graded since 8th march and the korean games are also not graded were literally 0 matchfixing happens
https://gyazo.com/c0d47e2a505a62ae4bbd4ef3b4e98fdb