The answer to the question after MUCH searching and calling various folks from Lincoln to the IRS. The correct form number for these tax credit vehicles is an IRS Form 8910 not an 8936. The other interesting thing is that you cannot claim a credit that exceeds your current tax liability. So the Aviator was suppose to have a $6538 credit, my tax liability for last year is $5269. So I figured $1300 or so out the window; wrong again. They take what you had withheld, which is my case was about $4200. So since I owed about $1100, they deducted that leaving me with the $4200 out of the $6500 credit and the credits DO NOT carry over......I don't know why it doesn't qualify. It is on this list under Ford Motor Company; IRC 30D New Qualified Plug-In Electric Drive Motor Vehicle Credit | Internal Revenue Service
As for your VIN, try entering it on this site; https://parts.ford.com/en.html
If it still isn't recognized then perhaps that is why the vehicle isn't shown as 'qualifying' for the rebate.