how can I open my 2018 ohio return which was never completed?
You need to switch it to the Desktop program to finish. How do I finish a prior-year return that I started in TurboTax Online?https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-finish-a-prior-year-return-that-i-started-in-turbotax-online/00/26322