The TurboTax desktop software can only be installed on a personal computer, desktop or laptop, not on a mobile device.
See this TurboTax support FAQ for completing a 2019 tax return originally started with the online editions - https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-finish-a-prior-year-return-that-i-...
You can download the PDF and the tax data file of the tax return started with the online editions to assist in completing the 2019 tax return.
To access your current or prior year tax returns sign onto the TurboTax website with the User ID you used to create the account - https://myturbotax.intuit.com/
Scroll down to the bottom of the screen and on the section Your tax returns & documents click on Show. Click on the Year and Click on Download/print return (PDF)
You can either install the software on a friend's computer and continue the 2019 tax return. Or you can seek out a local paid tax professional to assist you in completing the return using the information you have already entered.
Go to this TurboTax website to request a refund for the software purchased from TurboTax - https://support.turbotax.intuit.com/forms/refund-request.jsp
Use this TurboTax website to check your orders and payments -
https://turbotax.intuit.com/personal-taxes/cd-download/order-status/
