EMGS doesn’t accept your “health declaration form” directly from you. They only accept your “health declaration form” from your university. You can fill up the form and send it to your university and request them to submit it to EMGS.
From my experience. I initial did a pre-medical screening and I was told I need to submit my health declaration form. I actually emailed them directly (EMGS) because I was the one who initiated the application. However, if it was your institution who applied on your behalf, you should email it to them and request it to be sent to EMGS.