After you file

Same problem.  I have a message from TT saying that my return was transmitted. I owe nothing. No email from TT. I try to resubmit, and it says I can't.  IRS has no record.  Transmitted early April.

When I go to TT, there is a message saying I need to file. When I try to, I get a message saying:

 

The submission was a duplicate of one that was already received...Please contact customer support.

 

I can't even figure out how to contact Customer Support