When did you prepare them? Like did you do 2018 in 2019? And 2019 last year in 2020?
If you did them in 2021 you had to use the Desktop installed program and buy a program for each year. Did you buy the 2018 program and the 2019 program?
Hopefully you mailed them in separate envelopes or the IRS will miss one. The IRS is taking a long time to process mailed returns. Like 6 months and more. Only the IRS can tell you.
