The IRS has not processed a 2019 refund filed in October 2020. efiling the 2020 return was rejected by the IRS cuz didn't recognize the AGI entered. Any insight why?

Have you tried using 0 for the AGI?  There are a few other ways to obtain your AGI as well. Please see the Help Article here for further instructions.  

 

Also, if 2020's refund has not been processed, you will need to reach out to the IRS.  To get to a live agent, please see the instructions below:

 

Call the IRS:  1-800-829-1040  hours 7 AM - 7 PM local time Monday-Friday

 

When calling the IRS do NOT choose the first option re: "Refund", or it will send you to an automated phone line.  

So after first choosing your language, then do NOT choose Option 1 (refund info).  Choose option 2 for "personal income tax" instead.

Then press 1 for "form, tax history, or payment".   

Then press 3 "for all other questions."

Then press 2 "for all other questions." 

- When it asks you to enter your SSN or EIN to access your account information, don’t enter anything.  

- After it asks twice, you will get another menu.

Then press 2 for personal or individual tax questions.

It should then transfer you to an agent.

 

You can also contact your local IRS office.  See this IRS website for local IRS offices - http://www.irs.gov/uac/Contact-Your-Local-IRS-Office-1

 

Or, you may want to contact a Taxpayer Advocate in your area.  See this IRS website for Taxpayer Advocate in your area and a toll-free number - http://www.irs.gov/Advocate/Local-Taxpayer-Advocate

 

Yes enter 0 for the AGI to efile 2020 since you filed 2019 late and mailed it.