After you file

Yes, I am having the same issue and it is unacceptable.  My federal return was acknowledged to be received on February 11, 2021.  I received an E-mail quite a while ago saying prove I am who I am.  So I answered all the questions and the IRS said yep, you are who you are.  Still says I am pending and it is May 12, 2021.  3 months after acknowledging receipt.  This is ridiculous and  frustrating.