What I still don't understand about WHMCS
I've been trying to use WHMCS for a while to bill my current customers. These are customers that have a customized product with me and have been with me from the start (October 2008). I've always billed them manually, but I would prefer to automate things.
One things that's always prevented me from using WHMCS for this is their invoice number. In The Netherlands it is required to have consecutive invoice numbering. No exceptions. If you sent an invoice that you want to cancel, you need to create a credit invoice/negative invoice to make up the balance. That also needs to be in the same consecutive numbering as the normal invoices.
In WHMCS there is consecutive paid invoice numbering, but no consecutive invoice numbering. This would require me to use proforma invoices and send the final invoice after payment. For my existing customers this is too much of a hassle. They work with accountants and pass everything on. For them having 2 invoices makes it all the more confusing.
I've had several discussions about this on the WHMCS forums. I've always been pointed back to consecutive paid invoice number or the EU-thingy add-on. They just don't cut it. I need consecutive invoice numbering from the start.
My questions are:
1. Am I missing something here? Is what I want already possible?
2. What's your view on this? Do any of you have the same problem and how do you go about it?
3. If it turns out to be a "problem" with WHMCS, how on earth can I make them fix it?