DozyAnt 4 Feet Propane Adapter Hose 1 lb to 20 lb Converter Replacement for QCC1/Type1 Tank Connects 1 LB Bulk Portable Appliance to 20 lb Propane Tank - Certified

That grill appears to use the smaller 1 lb portable tanks. You can use the larger tank that you have, but you'll need an adapter hose. The hose you have is not going to work. I found an electronic copy of the owner's manual and the regulator needed is part number G2519-100. Unfortunately, I can't find one for sale anywhere. You may have to contact the manufacturer. I'm not sure what the actual connector is, it could be a proprietary connector.