In the past, I've e-filed my own returns with different types of software (including FreeTaxUSA last year) as well as hundreds of returns as a tax preparation volunteer. I have NEVER had to wait for a return to be accepted or rejected for more than 30 minutes or so.
I e-filed my 2023 returns on Sunday (4/7) morning, and now, almost a full day later, they have neither been accepted nor rejected. What is causing this delay?