I had to upload my kids birth certs as I did have them on my insurance and/or listed as dependents. Address did not matter.
If you are paying the most or kid lives with you the most, you need to list yourself as the FAFSA person. In my case, although dad made a ton more money than me and did pay child support, I had majority placement and I paid most of the kids bills thus I was listed on fafsa.
None of the schools we looked at for either of our 2 kids who qualified for TE looked at fafsa to determine if the kid was granted TE.
My ex and I split kids as far as claiming on taxes (he claimed one, I claimed one). Both were awarded TE at a few schools.
Our high school class of 2023 kid did get granted TE award at a few schools and did choose a TE school.
Our high school class of 2025 kid was also granted TE awards at a few schools and in the end chose a non TE school that was affordable (we are paying only 8k total COA this year for her).