Hello John,
The issue discribed in error 7 is related with firewall and other inaccessibility issues. In my case, whmcs is able to connect to the server and start the job. But the problem is the server is unable to complete the process with in the mentioned time (400000 milliseconds) . The curl timeout value is 6.6 minutes or 400000 millisec, my process takes more than 15 mints to complete. So I need help in increasing the timeout value to something more that 6.6 minutes.
Steve