After you file

I'm in the same boat. I filed through Credit Karma back in the beginning of March and two days later the IRS sent me the letter to verify that I was the one who filed. I live in Illinois but work in Missouri and I've been filing ever since I've started working, this is the first time they have ever sent me this. I thought it was weird when they didn't ask or offer to do the Missouri taxes. I'm already passed the 30 day period and haven't been able to verify because I don't have a credit card, student loan or home equity. I do have an auto loan account and talked to my banks branch manager today so I could get the number for the verification and the IRS said it did not match their records so now I don't have any way to verify. Not to mention a few days after receiving the letter the governor of Illinois shut everything down, including the Tax Assistance Centers.  Any advice? I'm thinking about going to H&R Block to see if they can help. I'm desperate people, the other person I'm living with was laid off due to the pandemic so I have to carry the load by myself on top of my insurance, car note, and both halves of the rent.