I know this is an old thread but did you ever get your confirmation emails.  I am dealing with the same thing at present.  I e-filed my 940 & 941 tax returns and usually I get a "Accepted Tax Return" confirmation email instantly and for sure in the same day.  But I submitted these returns on 1/4/22 and it's been 2 days and I still have not gotten an Accepted email.  I called support twice, first time the guy was totally clueless finally put me on hold and came back and told me that these emails come from the IRS (which past emails plainly are signed by QuickBooks team) and that the IRS was closed.  I'm like the IRS is "CLOSED" on January 4th?

The 2nd support call the lady put me on hold she also seemed clueless about what to tell me, she then came back and said I will be getting the email today, I reminded her it had been 2 days that I had not received the confirmation emails.  She said again I would get them today, still I have not gotten them but the day is almost over maybe I might but I am not hopeful.  I still feel like each support person I talk to is just trying to get rid of me because they do not know the answer.