What do I do got a letter from IRS saying I had to call within 30 days. They were trying to verify my identity. I missed the deadline. What do I do?

 Call the IRS anyway and ask the IRS what you need to do now.  Do you have the letter with the phone number on it?

How do I get my stimulus now that this happened

You can get  the stimulus money on your 2020 tax return.

 

The stimulus check is an advance on a credit you can receive on your 2020 tax return.  If something went wrong or you did not get the stimulus check this year, you can get it when you file your 2020 return in early 2021—if you are eligible.It will end up on line 30 of your 2020 Form 1040.

 

https://www.irs.gov/newsroom/economic-impact-payment-information-center-topic-j-reconciling-on-your-2020-tax-return

 

https://www.irs.gov/coronavirus/coronavirus-tax-relief-and-economic-impact-payments-for-individuals-and-families

 

https://ttlc.intuit.com/community/tax-topics/help/how-will-the-stimulus-package-impact-me/00/1393859

 

 

But call the IRS and get your 2019 return sorted out with them.