So, take that receiver off and have one fabricated. Our HT 26.5 RLS didn't even have a receiver so I went and had a professional welder put one on along with wiring for the trailer. Cost around $500, and does a great job towing my Crestliner Super Hawk 1900.
2012 GMC 2500HD D/A Crewcab
2012 Jayco Eagle SuperLite HT 26.5 RLS
2009 Crestliner Superhawk 1900
2013 Polaris Sportsman 550 EXP
2008 Polaris Sportsman 700 X2