This was probably my mistake. This is the first time I've ever done this so I just set up an account like a regular user. I didn't figure out how to link it with my Meta Business Suite until it was too late.

just created a new "Asset portfolio" from my main facebook account, an asset portfolio is like a bucket that holds other assets like instagram accounts, but it's empty so far.

I used a different email which might have prompted a security review, it was instantly blocked "because it looks like it was created with unauthorized automation", I just clicked on submit a review and it asked for a phone number to verify with a code, and then an ID. I think this is pretty standard, the initial block reason can be whatever, it just works as a de facto way for Meta to manually approve accounts. There's a lot of spam, and scams going on, so it makes sense that they are implementing controls, I for one am happy to differentiate myself from people whose job it is to make multiple accounts and promote fake stories and businesses to scam the elderly or stuff like that.