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Check out the v.269 Ride the Lightning patch notes
here!
Where should i post this?

Bug report or tech support? I want a refund.
Comments
https://support-maplestory.nexon.net/hc/en-us/articles/204846505-How-do-I-request-a-refund-
But you can try to contact live support and attempt to get a refund. Was surprised that they issued a refund for a pet I purchased because of a description error about it having a skill.
https://support-maplestory.nexon.net/hc/en-us/articles/204434619-How-do-I-chat-with-Nexon-America-and-what-are-the-chat-hours-
They will insist your game crashed because of something on your end (your computer or your network).
I feel you pain because this would always happen to me when I did the japanese one.