I purchased the Max package with turbo tax Intuit. I received a letter from the IRS and I need help with verifing my identity. How do I get help when I efiled my return?

I have my information that I used to e-file my return. How do I verify my identy when I efiled my return and this year's information is online in TurboTax and I don't have a physical copy of my current year's tax return due to it being efiled?