All downloads/installs using the same purchase must all be done using the account associated with the purchase. Support may be able to help ...
See this TurboTax support FAQ on how to contact Support - https://ttlc.intuit.com/questions/3401489
Or –
Use this website to contact TurboTax support during business hours - https://support.turbotax.intuit.com/contact/
Or –
Support can also be reached by messaging them on these pages https://www.facebook.com/turbotax/ and https://twitter.com/TeamTurboTax
