Just wanted to write about my experience.
June 23 in the evening - applied for 2 people and the same day got the notice that they received the form( not in email, just online in USCIS account)
June 29 - beneficiaries received an email with instructions about creating a USCIS account. We did attestations together at around 4 pm
June 29 at 9 pm- in my account I see the notice that a travel authorization was posted by CBP on beneficiaries account.
And on my USCIS home page it says that both cases are closed. The beneficiaries are sleeping right now, so I'm not sure if they got the travel notice. Also, I never received any emails about any updates; I was just nervously checking account every day for any updates.
Also, will beneficiaries need a paper travel authorization notice or just show on the phone? I'm not sure if their postal service works and if mail gets delivered.
Thank you all for the useful information here!