I've been struggling with some bugs with this plugin and I've realised it doesn't support TLDs like co.uk. For example, in the WHMCS server addon, it says this:
$sub = explode('.',$params['domain']);
if (count($sub > 2)) $request['domain'] = $sub;
else $request['domain'] = $params['configoption2'];
The trouble with this code is that if my domain is a co.uk or any other TLD with a '.' in it, the code b0rks.