It is because the gov't hasn't processed your 2019 tax return into the system yet, that's why your 2019 AGI number is not found to be matched although your AGI number is correct. My friend has the same problem and she ended up mailing the returns. You can check your tax return status in the IRS site by creating an ID and password to access your personal tax information. Search Transcript in the IRS site. My friend didn't received her last two stimulus checks either due to the 2019 tax return is not yet processed into the gov't system. Hope this helps!
