You can ONLY top-up Game Cash by clicking the "CASH" button in the Rappelz Item Shop
Currently, POINTs purchased at play2bit.com cannot be converted to Rappelz Game Cash. Please note that POINTs cannot be used within Rappelz and refund cannot be made after purchasing POINTs.
Select "Menu - Item Shop"
Click the "TOP-UP CASH" button located at the bottom right
Select the item to purchase and the payment method
Confirm the top-up complete messege