cPanel Extended For WHMCS 3.15.1 Not Nulled

No permission to download
Anyone have this working at 100 % ???




I cannot get this to work properly. That message will appear randomly. sometimes it works sometimes don't work.
 
The module activated successfully but when I try to save features options it doesn't save it and when I try any of the one click login button or any other button on the client area it redirect me to the client area login page. Please advise!