I have just graduated from high school and I need to send my official certificate to the university in which I will attend. It is about to expire, so I want to know if this site has expired and how long it will take to reach it.
You must have a certificate sent directly from your school to the university. You cannot send it through an intermediary. You should contact the school office and ask them to send the certificate directly to your university. They are often free or very cheap. The time varies depending on the school. You can ask your HS how long this will take. If it takes longer, call the university, tell them you have applied for your transcript, but their school says they will not arrive before X and ask if they agree with you. Are This is usually good. Otherwise, there are times when you can ask your HS to do it.
I don't know what this site is. And it doesn't matter. You don't need it and it won't help you.