Got a letter from IRS today and dreaded opening it. They say I have a $775 credit and they have never received my 2020 tax return. I have a copy of the check they processed on 4-5 for $775 that was sent in the same envelope as my tax return. The letter says I need to send a copy of the return so I’ll do that. Gives me greater confidence in them. Last year they told me they didn’t have my account info to send my stimulus check to although they had debited my payment from the exact account. Gotta love them.