My taxes were rejected due to matching issue, seeking advice

My taxes were rejected. When I checked my IRS history online, I could see that my 2020 taxes were never processed, which I was unaware of until now. So, I think my taxes might have been rejected because **they don’t have my last year’s account AGI to match in their records.** It’s tax season so it’s incredibly difficult to get someone on the phone. Anyone know what i should do? Thank you.