I did file it electronically on Turbo Tax...I did "Transmit My Returns now" and I have a receipt from Turbo Tax showing that. (same for 2019 Tax Return as well). And, I mailed in my payment with the IRS voucher both years and I know the checks were received by the IRS.
And, I also mailed the signed paperwork to the IRS after I received notice from them (unfortunately the notice came almost a year later [Feb 2020] that they hadn't received my paperwork.
Been using Turbo Tax and filing electronically for several years, and this has been the 1st time there has been an issue.
I've already been to irs.gov multiple times (created an account earlier this year) and clicked on those links...didn't find the information helpful for my situation because I've done all that I should have done to have my taxes filed correctly, plus I've sent in my payments (April 2019 and July 2020) and I know the IRS has received them.
