I'd recommend an English version of your website. There are companies in the US which have to issue Factura's and I have found it hard to find websites discussing Factura's and offering Factura solutions in English.
We have not considered it, since our main market is Mexico, because of how taxes and invoices work here. Also, we don't issue invoices—we just receive them. But sure, we'll look into your suggestion!
I'd recommend an English version of your website. There are companies in the US which have to issue Factura's and I have found it hard to find websites discussing Factura's and offering Factura solutions in English.