To Setup Payment Option Please
1-Login to Your Account and Go to :
Edit Your Profile Setting
2-On The Bottom Under "Payment Details" You Can Add You're Prefer Method Of Payments To Get Fund Directly Via Customer .
3-After You Done Click "Save Change"
** For Authorize.net Users **
Log into the Merchant Interface at https://account.authorize.net/, click Account from the top navigation, click Relay Response and add https://platzo.com/validate.php?authnet and Click Submit.