Thanks a lot for the clarification.
When I applied the first time in January 16, I attached document alternative to birth certificate, but unfortunately they returned my application with money due to this issue and in the email they only mentioned that my I need to apply again with a birth certificate
According to this I have the following questions:
1) does it mean that all other documents I attached are good to go again?
2) when I submit again with birth certificate attached, will they count the 4 months wait or no restart again? (They mentioned that a copy of this application will no be retained)
3) my study visa expired last month is it an issue, to reapply with it, or I need to renew it?
4) the photo I attached date taken is longer than 6 months, will it be a big problem if I attach it?
Thanks a lot for your time and clarification.