Invoice issue

[staipz]

After doing a user test to create a hosting account and invoicing with a free trial version of WHMCS, I found that if I am giving user a hosting account for a free trail period of e.g. 2 months, an invoice will be generated marked unpaid, and due for payment 7 days later, when I put in 7 days under the "General Settings", "Order Days Grace".

 

That means, if the user order on the 7 Apr 2010 with a free trial due to the promotional code entered by the user during the order process, he/she should start paying after the free trial period of 2 months i.e. on/after 7 June 2010. But the problem is, an invoice has been generated and marked "UNPAID", and indicated the date due for payment 7 days later after the registration of the trial period i.e. on 14 Apr 2010 in the invoice.

 

What settings can I do to avoid this situation, as there is a possibility that the user account can be automatically suspended, and also to avoid any kind of unnecessary administration within WHMCS to correct the situation manually every now and then?

 

I appreciate any advice and help.