To setup ccbill user management, you must do the following after logging into the CCBill merchant admin.
1) Select Account Info->Subaccount Admin from top navigation.
2) Select Subaccount of site in question
3) Select User Management
4) User Management URL should be https://domain.com/billers/ccbill_jpost.php (or whatever you renamed this to) You must use the end url, so if you are redirecting www to no www, you must enter no-www because a 301 or 302 redirect breaks the postback.
5) Encryption type None.
Approval Post URL and Denial Post URL should be blank under “Advanced” in the left column
Please be sure to enable ccbill postback in the tube script admin area settings under paysite settings as well.