You shouldn’t have trouble installing 2018 and prior. The License Code didn’t start until 2019. But if you do get 2018 and prior installed you won’t be able to update it or download any state programs. Are you sure 2019 activated ok? They only support the last 3 years 2021, 2022 and 2023. When did you install 2019 & 2020 on the new computer?
So you should save all your returns to a pdf file with all the worksheets. Open each year and save them now if you haven’t already.
