Back then you should have registered the account ... see if you can get it again. OR contact TT support to get a download pushed your way.
See this TurboTax support FAQ for license code - https://ttlc.intuit.com/community/tax-topics/help/i-can-t-find-my-license-code/01/852973
Contact TurboTax support and speak directly with a TurboTax support agent concerning this situation.
