[MODULE] xBilling

[CK96]

I'm having trouble setting up the front side script...

I am getting this error in my browser window when I visit the place I uploaded the script (which is on one of the domains hosted on the server):

Problem reading data from http://[panel url]/api/xbilling

Also, when clicking on packages in the xBilling module, I get an empty screen. There are packages setup in Reseller > Package Manager.
   

Any help on this would be greatly appreciated.

EDIT:

I now have the module working on my other server, running Zpanel.

The problem is when you register with the front side, everything works fine. The user gets added. All the information is entered correct, except the emailing of the user with their details.

Here is the piece from my mail log that shows that the email is being sent to the wrong person:

Nov 14 16:05:48 server postfix/qmgr[2248]: B997260B1A: from=<www-data@server.[domain]>, size=678, nrcpt=1 (queue active)

Nov 14 16:05:48 server postfix/local[7456]: B997260B1A: to=<[first part of user's email]@server.[domain]>, orig_to=<[first part of user's email]>, relay=local, delay=235797, delays=235797/0.01/0/0.01, dsn=4.1.1, status=SOFTBOUNCE (unknown user: "[first part of user's email]")

The [first part of user's email] is eg:
You enter "bob@example.com", the part in the log is only "bob". When I go to Reseller > Manage Clients, the user's email is "bob@example.com".

I have no idea what is going on here, further it is a great module