I noticed that only purchases made with the same gender are shared even though the items share the same names for both male and female.
example: Theres a "singing together robe" for both male and female. I purchased this on a female, but only my female characters have access to it, not my male characters
However, in the points shop, I purchased a weapon skin and this weapon skin is available to both male and female on any class (the weapon skin changes to match the class)
outfits, cosmetics and anything else purchased in the cash shop should not be dependent on the gender that purchased it especially when the item has the same name but for a different gender.