Snow Blowers

Purchased the HUSQVARNA ST224P-24-inch 208cc Two Stage Electric Start with Power Steering- 961930122, from Amazon Prime! I have been trying to Register it on the net site for about 6 weeks and it keeps coming back with no model number. I have put EVERY conceivable numbers that are on the Snow Thrower BUT NO LUCK! Can someone please Help me, the snow will be here shortly and I want to be covered by the warranty even since I also purchased the extended 4 year plan. Thank You in advance! barbara1944