Same question, same problem.
No details in email. All it contains (exept long text about pro version) is a small kode {{nf_form_data}}. No data. No information more.
I changed method to WP Mail, nothing changed.
So do I really need to buy a PRO version to see orders info?
UPD Tryed plugin on my other site – with the same settings it normally works.
Same WP versions, same hosting, seems nothing specal in plugins. Only differense is a theme.