1) There's no problem doing it from a different account this time.
2) Sorry, what does the question specifically say? If it's asking for family members already residing in Australia, yes, you'd mention them.
3) Yes, you can write "Please see uploaded statement called [whatever you named the file]" in each of the boxes.
4) No, you're not too late. You're not too late until they contact you and ask for it and you don't provide it within the deadline they give you.
2) Sorry, what does the question specifically say? If it's asking for family members already residing in Australia, yes, you'd mention them.
3) Yes, you can write "Please see uploaded statement called [whatever you named the file]" in each of the boxes.
4) No, you're not too late. You're not too late until they contact you and ask for it and you don't provide it within the deadline they give you.