The game issued a major balance patch in January 2021 that offered improved rates for attaining certain in-game abilities and items, but then did a rollback four days later. There were disputes over how refunds were issued; NCSoft did not return real-money purchases made during the four days of the patch, but rather refunded spent in-game currency instead. This essentially forced players - who may have bought in-game currency expecting the higher rates from the new patch - to keep the purchase at the lower rates of the old patch.