[Update 12:50 PM Dec 2] The Web post has been updated to reflect the accurate purchase limit of violet cubes in-game.
If you had purchased NX in order to purchase additional violet cubes in-game, and have not yet used the NX on another purchase, you may submit a ticket through our Support Portal to our Billing department to request a refund of your NX purchase.
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Hello Maplers,
We are aware of the discrepancy between the Black Friday Sale web post and the actual purchase limit of violet cubes in-game. Due to the holidays, there will be a delay, but we plan to look into this issue when we can. We apologize for the confusion.