The 2018 tax year is over so the mobile app will not work for you. A download of the cd version will work if you can rent or use a MAC.
Contact turbotax during business hours to see if you can change your purchase. https://support.turbotax.intuit.com/contact/
Disclaimer: Not a tax professional. Information gathered from internet links. Anything dated in June 2019 was posted in prior years and is before the 2019 limits and changes.
