Jainus Item Mall
https://shop.playrohan.com/Itemmall/ItemMall.html

Isen Item Mall
https://shop.playrohan.com/ItemMall/...erverType=Isen

When you go to the Item Mall home page it should say Jainus(Normal Item mall). On the top menu says Isen Item Mall, right of the Item mall one. That's how you know what Item Mall you're at.