Recurring Invoices Issues - cron job


I have followed recurring invoices cron job setup as per instruction (WIKI), however I am not get getting any new invoices generated and emailed automatically as per setup instructions.
Invoice plane is installed on a vps server.
with a cron job setup as mydomain/invoices/cron/recur/your-cron-key-here to run once a day.
Invoices were set to recur on 28th , 29th and 30th of September 2015 for three different client but has failed to generate nor email them out. .htaccess is setup for 301 redirect rules which is
RewriteCond %{HTTP_HOST} !^www.(.)$ [NC]
RewriteRule ^(.
)$ http://www.%{HTTP_HOST}/$1 [R=301,L]

If I put this link mydomain/invoices/cron/recur/your-cron-key-here in explorer on the day an invoice is recurring what should the displayed page be? anyone?

Since I have opencart installed in
Entering the link directly in explorer mydomain/invoices/cron/recur/your-cron-key-here is showing “the page you have requested cannot be found”

Can any one assist me on this please.

Thank You

If you open the page it should be just blank. However you should check your server error logs, maybe some errors occurred.

You may try webcron (like as a trigger, easy to find issue.