@Marklucy2587 Desktop software (CD/download) can only be used on a full PC or Mac--not on a mobile device. If you are trying to prepare an earlier year return you need the desktop software to use TurboTax. The online program is only for a 2019 return--no other year.
If you do not have computer that meets the system requirements then you could use paper forms and prepare them by hand--what year do you need?
And contact customer support about the software you are unable to use. Use the word "billing" --- not refund.
To call TurboTax customer support
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
They are available from 5 a.m. to 5 p.m. Pacific time Monday-Friday
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**
