Most Popular Flush for 2021 Hyundai Santa Fe

Received two different sized bars, neither of which fit my vehicle

The rails looks and functions great on my 16 Mini Countryman. However, when I drive over 35mph, there is a sharp hissing sound coming from the rails. these rails are supposed to be aerodynamically enough to eliminate sounds. I tried switching the front to rear and same issue. I went as far as taping any voids to see if that would help. Nothing works.