Since you're legit then send an email to info@concept2.com with complete details of the ergo serial number, the PM model, date code and serial. Who you purchased from, when you ordered it, when it was delivered, which shipping company delivered it, the state of the boxes before you opened them, etc.
You wouldn't expect seconds quality equipment from the worlds leading ergo manufacturer.
https://www.concept2.com/service/monitors/pm5/firmware
https://www.concept2.com/service/indoor ... ranty-info