Here are some things I would take a look at:1. Is User Management turned OFF in your ccBill account?
*Important* User Management needs to be turned off in your ccBill® account. s2Member's integration with ccBill® does NOT require ccBill® to manage Usernames/Passwords. Instead, s2Member needs to be given exclusive permission to handle this for you. In your ccBill® account, see: Account Admin -> User Management. Turn this off, and choose: Do NOT collect Usernames/Passwords. You will also want to remove Username/Password references in the APPROVAL Email Receipt configured in your ccBill® account. In your ccBill® account, see: Account Admin -> Custom Emails.
2. IMPORTANT. Did you setup "ccBill® Background Post Integration"?
See: s2Member -> ccBill Options -> ccBill® Background Post Integration3. Is s2Member's logging functionality for ccBill enabled?
If your log files do not report anything, this would indicate that Background Post Integration is not working properly. I would go back over your Background Post Integration for ccBill until you have activity in your logs. s2Member's log files can only report back to you about its communication with ccBill. If there is no communication taking place, there is nothing for it to report.
Please let us know if you continue to have trouble. You may also consider using the "Live Chat" functionality inside your ccBill Client Account, as they might be able to help you identify potential problems in the configuration of your ccBill Client account.