Credit Report unavailable on zillow application .

[Ben Taub]

I’m using Zillow rental tool for a background check, my contractor who i know for a couple years now has referred me this guy who is his cousin, who is probably an illegal alien, he Looks like a nice guy but its not bringing up a report, because there is no  information on the report, I couldn’t find the numbers he gave me on ''Been Verified'' either .
However its says on the Zillow application ''IDENTITY VERIFIED'' ( not sure how it works if they have no report ) .can i trust my intuition and the referral of my contractor?