Most people here write their own code and thus come here to share help and bits of code. This isn't really a forum for the support of commercial products such as opencart so please don't get your hopes up too much for any assistance. The odds of someone here knowing that product inside out are low. You may want to contact the authors of the software to see if they can help.
My helpful sig has gone because a mod below the administrator gave me an infraction - despite the administrator personally agreeing to it.
If you need any php tips or tricks you can PM me.