I filed my return, but TurboTax continues to say that I haven't filed.

I am using TurboTax Desktop for Windows.
I have filed my taxes through TurboTax, I have received a first email from Intuit saying that my Return Status is in progress, and that the estimated acceptance date was in two days. 45 minutes later I received a second email saying "Your federal tax return was accepted by the IRS".

Now, when I go to the menu "File -> Electronic Filing -> Check Electronic Filing Status" it says "You Haven't E-Filed a Tax Return Yet".

If I try to file again I get the error message "The submission is a duplicate of one that was previously received. Please contact Customer Service", which I did but they were not able to figure anything out.

Is this normal behavior or TurboTax should indicate that the taxes have been filed? How do I make sure they have been filed? How do I make TurboTax acknowledge that  the my tax return was indeed filed?

(PS: I live overseas and therefore need to file only the Federal Return, I don't have to file the State Return, which I indicated during the filling of the information.)