Get your taxes done using TurboTax

I think you mean Premier.  Premium is only an Online version.

 

How to download your software purchase

https://ttlc.intuit.com/community/installing/help/how-do-i-download-the-software-i-purchased-at-turb...

 

You might have another account.  That's common to end up with multiple accounts.  First LOG OUT of whatever TurboTax account you're logged into right now. Then use this TurboTax account recovery website to get a list of user ID's for an email address.  You can use the same email address for 5 accounts. Run the tool against any email addresses you may have used     

https://myturbotax.intuit.com/account-recovery/