For something completely unrelated: could you make sure that the currency USD is mentioned on the invoices?
There are lots of currencies using $ sign and where I live accountants sometimes assume amounts are in the local currency HKD instead of USD.
ok I’ve just deployed a change that now shows: "($USD) Total:"
You can view it on your billing page:
https://servicestack.net/account/billing
Renaud Bompuis:
That was fast! Thanks a lot!