Hello, I am getting error "Your transmission didn't go through". Stimulus reg. Also, my wife already did her 2019 taxes, but TurboTax doesn't let me file Separately

Don't know why it didn't Transmit.  Might be a glitch.  Try again later.  But how did your spouse file?  As MFS or Joint?  Does it say why you can't file separately?  Are you in a community property state?  Did you enter her name and ssn?

Found this for transmission errors

https://ttlc.intuit.com/community/e-file/help/what-if-transmit-returns-doesn-t-work/01/25805