Pretty much, the only people who can help you are the chart authors: so as Graeme_Grant has said, you need to contact
Support : FusionCharts Technologies[
^] and raise a ticket.
I'm sure they are used to customers who can't find ID details, and will help you to work out what it is from your company details. After all, you did pay for it, so you should use the support you gave them money for!