You will have to contact TurboTax support to see if they will push a TurboTax desktop edition installation file to your download account at no charge since you already purchased one of the TurboTax online editions.
Use the key words Billing Issue
See this TurboTax support FAQ for contacting support - https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number...
