Business & farm

See this TurboTax support FAQ for entering a Form 1099-K - https://ttlc.intuit.com/community/entering-importing/help/how-do-i-enter-a-1099-k-in-turbotax-online...

When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state.  

This will take you back to the 2018 online tax return.