No major update. Says estimated time left is 10 months for one parent and 2 months for another. Both at the same center, filed the same day. I don't think the projected time is accurate.
It is recommend to NOT start their AoS process when they are visiting you on tourist visa. Tourist visa is not an immigrant visa so it would be a case of visa fraud if AoS is pursued. Not to say people haven't done it before, they have, but is not recommended. File I-130 now and they can still visit you while the process is pending.
Same thing appeared early on as I was preparing the form. By the time I was ready to submit, no error appeared. In fact, the form said 'no errors found' right before clicking the submit button. I submitted two forms and have received receipt notices already.
My understanding is that this is an inconsequential alert and shouldn't affect your form as long as you've entered all information correctly.
Sounds like you did file taxes though as you speak of IRS tax transcript. Submit that with a letter saying no w2 exists because you did not work but taxes were filed. Good luck!
A final worthless update: yesterday (24th), the status updated to "On February 24, 2023, we issued your Certificate of Naturalization for your Form N-400" despite receiving the certificate on the 20th, same day of the oath ceremony. 🤷♂️