Stuck in infinite Apple Account Recovery loop - 24h turns into 6 days and then restarts, for over a month. I have both trusted phone and email codes but iPad Air M4 is now a brick. Any advice?

I have forgotten the iCloud password for my daughter's profile... she only has one device (iPad Air M4)

Changing the password from my phone via parental controls doesn't work, it says to use her device.

When I receive and enter the verification codes to my phone number and her e-mail, Apple claims it needs 24h to verify the information, after 24h I don't receive any information but the status changes from 24h to 6 days.

I have tried everything, 100 calls to Apple support.

Following all instructions the verification and after 24h the 6-day period starts all over again, I've been trying to reset the password for more than a month.

Apple support on the phone tells me to follow the instructions and blatantly ignores the fact that when following them nothing happens, they talk like robots and ask to wait another 6 days.

Since when has a forgotten password on an Apple device become such a mystical problem even though I receive both security codes both to the number and to the e-mail!

Any suggestions? I don't want to throw the iPad in the trash but using it without iCloud is also impossible.