Fit Invoice 7.4.92, no possibility of printing and sending invoices in PDF

Hello.
As in the subject, I have downloaded and installed pro pdf writer, the options recommended by the manufacturer are marked, and yet after clicking "email pdf" nothing happens. I can opt out of automatic sending of invoices in electronic form, but I would like to know if invoices in pdf are created at all and where they are stored, then I could send them in a separate e-mail, unless someone knows how to get a PDF document in the program otherwise Fit Invoice 7.4.92?
I will be grateful for any advice and suggestions.

Search for .pdf files on your computer.

I searched, there are no pdf files with invoices.

You can save the invoice to a file using Print -> Print to file (using a .pdf printer).

https://helpx.adobe.com/pl/acrobat/using/print-to-pdf.html