My tax return never went through. At some point it stuck and now it says that it's been filed. Even my accountant tried and he can't see where anything was filed?

Why was the federal tax return rejected?

If it was for the 2018 AGI, did you correct the AGI and e-file again?

See this TurboTax support FAQ for correcting the 2018 AGI - https://ttlc.intuit.com/community/agi/help/where-do-i-correct-my-agi-in-turbotax-online/01/26311

You complete your tax return by finishing all 3 Steps in the File section. In Step 3, to e-file your tax return, you must click on the large Orange button labeled "Transmit my returns now".

After completing the File section and e-filing your tax return you will receive two emails from TurboTax. The first email when your tax return was transmitted and the second email when the tax return has either been accepted or rejected.

What happens when you complete the above procedure?