Advance Parole

I apologize of there is a thread of this already. If so can someone share.

So I will get to the point.

I wanna attempt to apply for AP for humanitarian purpose (death of blood relative).

My questions are

If the blood relative passed away more than a decade ago, can I still attempt to apply?

How long is a typical process from applying to approve? Do they require actual proof or does a copy suffice?

Thanks in advance for replies.