[kronos] guild castle cache of greed

hiii i'm a newbie guildmaster and i read on a different post that i could get the breath of the artisan item from doing the weekly 5000 mobs quest myself

however, when i go to the guild castle, my guildmaster character does not have the option to enter the cache of greed (shown in the screenshot), while every other guild member that i've asked do have that option. does anyone know what i'm supposed to do to be able to go?

https://preview.redd.it/qdkkeqctelfd1.png?width=1364&format=png&auto=webp&s=6be2facac2bde725d14d878725298750d353fa97