CCBill issue. Users profile is not updated after payment.

Τhe OrderId error logged can be found CB at Paid Subscriptions: History and Logs (13/09/2016 19:18:2)

I whitelisted all the range of IPs that CCBill is using. Result: Nothing
I disabled the firewall: Result: Nothing

CCBill has been configured according to the manual you provide in PDF format.

The firewall changes have made a difference. You're now receiving CCBill IPNs. The notification 15/09/2016 04:08:2 was successful. The notification 15/09/2016 09:47:54 is for a basket that has already been paid. The failed IPNs with "Denied" status (14/09/2016 20:29:25, 14/09/2016 20:24:33, and 14/09/2016 20:21:15) are all for baskets that no longer exist so there is nothing they can pay (appears they were test purchases). This means it appears it should be working fine.

Yes, by following your suggestions, it looks like it is working now.

Thank you!

Well it is half solved i guess.

After the payment, the client is transfered to our site where he still gets the message "contact the Webmaster. The basket could not be found".

But this the only problem because even when the error message shows the profile is updated with the right paid subscription.

Example for the same payment

Event type Change log
Event time 16/09/2016 23:47:35
Message Updating payment basket status: Completed because of event received: web_accept. Previous status was: NotInitiated

and the next log for the same order

Event type Error log
Event time 16/09/2016 23:47:50
Message ccbill: The OrderId is missing in the return URL: Probably due to missing "cbsubs_ccbill_basket" cookie: Please contact the webmaster to check the error logs.

Now if you look at the two logs recorded time you will see that the payment basket status changed 15 seconds before the error log was recorded. I do not know if this is somehow related to the "The basket could not be found" error.

Is there a case that the basket could not be found because it was already updated?

CCBill return URL doesn't let us include the basket id. So we have to set it in a cookie then retrieve it when the user returns. Are they taking too long to return? Are you able to confirm? If so please check your browser cookies (probably going to need a browser extension, but can try developer console by pressing F12) and see if the cookie cbsubs_ccbill_basket exists. We may need to try changing this to use session, but unsure if that'll work correctly either.