AGI

My 2020 return has been rejected due to what they claim is an incorrect AGI.  I have double-checked the amount several times and it is correct.  In years past I have used Turbotax but have not e-filed, rather I've printed the return and mailed it in with payment.  This year I chose to e-file and submit my direct deposit information.  Is the reason my return has been rejected due to my not e-filing in previous years and it doesn't recognize the AGI?