From the InfoS POS application, send an invoice in 1 click for free by country. The condition is that you have an application certificate for e-invoices.
Namely, for sending e-invoices to public procurement payers (cities, municipalities, hospitals, institutions, utilities, etc.), FINA, as a central service, does not charge for the service of receiving invoices. All you need is the InfoS POS software, and an application certificate that lasts for 5 years (the price is HRK 375.00 for 5 years, and is paid to FINA).
Avoid complicated solutions and unnecessary waste of time. Create an account and click on the button. In addition, you will be shown the detailed status of your invoice.