I met a similar issue, but it was my federal amended return.
I did transmit my 2023 amended tax return several days ago, and received the confirmation message about the acceptance of my state amended return, but didn't receive any confirmation for my federal amended return.
On the page 'check E-file Status', the state part shows accepted with green. But the federal part shows 'Transmission Trouble - Please Try Again'. This means it was not successfully transmitted yet.
When I go back to file again, the software continues saying both my Federal and State returns have been transmitted. If I click 'Continue', it always goes back to the previous page, and no way to proceed the filing process.
The customer service couldn't help and suggested me to print and mail :(
