Messages from primo

PRIMO is a service or app that requires users to enter passcodes for access. It seems like it may be related to food as there was an SMS message about ordering from Primo Pizza and Grill. Additionally, some of the messages mention receiving Amazon vouchers after posting ads on something associated with PRIMO. The web search results show various definitions for "primo" including being excellent quality or referring to music played on the upper half of a piano keyboard in duets/trios/ensembles but none seem directly linked to this particular sender's use case based solely off these text messages alone without further context available.