I want to file an extension but now I need to file an extension. My filing wasn't accepted because my prior year AGI was incorrect. any suggestions regarding extension?

Try using a Zero for your 2020 AGI.  It has gotten allot of users to e-file and get accepted.

You have several options:

1) Use Turbotax to request extension
See https://www.youtube.com/watch?v=2Vu4agRok68.

2)  Use IRS site to request extension
https://www.irs.gov/forms-pubs/extension-of-time-to-file-your-tax-return

3)  Print the extension request form and mail it. 

https://www.irs.gov/pub/irs-pdf/f4868.pdf

Due date is today.  Postmark by today is okay.

**Say "Thanks" by clicking the thumb icon in a post