Introduction: What Hand Gesture?
It's this one
The hand movement in question is a 'precision grip' gesture whereby the thumb and index finger are pursed together to represent holding a small object. This gesture was perceived by some as mocking men for the size of their genitals, and became a controversial emblem associated with misandry (i.e., man hating).
Okay, can you show me some examples that may have offended the Koreans?
Here are some of the comments in addition to the untranslated captions in the pictures above
Despite the situation of the "Hand Gestures", the game is still being playing in P.C. As seen above, there are still around 700 ~ 1700 players playing (in P.C. alone) and real active player numbers should be more than that when we look at mobile players from both Android and iOS.