How to Fill in GoCash RPS -Visit the website http://portal.playrohan.com/, then click "Log in". -Enter Portal ID and Password, then click "LOG IN". -Select "ADD RPs". -Select top up via "Payment Options", Then select "GoCash" and click "Next". -Select Region USA. Select the number of RPS to top up and click "Submit". -A new browser page will appear. Look at the left side and it will say "Non-Members". Below that, there will be a place to enter the serial code. Type the serial code and click redeem. RPS immediately enters in a matter of seconds