Did you get your state tax refund (if you expected one)?
If you got a state tax refund, then we can deduce that both your returns were successfully transmitted. If you have the acceptance email, that's proof it was received. Unfortunately, we can't intervene with the IRS if they delayed or lost your return. You can try contacting the Taxpayer Advocate. Possibly you could mail a signed copy of your 2019 return to the IRS as a backup filing method, although this may cause problems if your e-filed return is still in the system. Best first step is call the IRS, as lousy as that sounds.
