Federal Tax Return Not Accepted nor processing

Hello, When I created my turbo tax account to file my tax returns I had intended to e-file. However they would not let me because I’m missing my AGI for a job I worked in 2019 to prove my identity. I went to the IRS webpage to prove my identity through my 2019 file but could not access any of this information because I apparently don’t exist since I don’t have a credit card, no student debt or loans that exist. Skipping forward. 
I had to mail in my federal and state return. I signed, dated and addressed everything properly. My banking information was correct, I got certified mail to ensure delivery was correct. I received my state return. Unfortunately my federal has been delivered at the IRS building since February 24, 2021 at 1:03 PM. Yet when I go on the “Where’s my refund tool” all the information I enter is incorrect ( it isn’t ). I understand COVID is a thing and it’s taking longer but how the hell am I supposed to know it’s even been accepted into the building?? Thanks for your time. 
The IRS also states NOT to refile or to even call unless it’s been 6-12 weeks AFTER processing. Mine hasn’t even been accepted or processed. I’m getting irritated.