This gives you the Prestige Blossom Rank in game & the Easter Top Hat. You can see an image of the Hat by viewing the image below, equip it in game by using /cm and clicking the hat you wish to use! The Blossom Rank grants a Yellow -> Pink -> Purple chat gradient in game when equipped and is only available until the 15th until leaving the store and being replaced by the Blossom Rank. The Prestige Blossom Rank comes with a Gold Star! Flex on others who weren't quick enough!!! It also comes with a Shiny Hat! 
You can equip your rank in game by doing /ranks, clicking Cosmetic Ranks and scrolling over to Prestige Blossom Rank. You CANNOT equip two ranks at once. If there's any issues, feel free to open a Ticket on our Discord describing the issue.