Try different browser. If nothing happens, delete application and fill new one .
I think I did a poor job explaining myself. What I meant is that, in the returned application, the items showed as "Incomplete" or "This document is incomplete, please review and update the document" before even doing something on them. Once I, for example, clicked on edit the form IMM 0008, went through it and save it, now it shows as "Ready to Submit". The same when I uploaded again a copy of my passport, in the attachment section now has a checkmark.
I was just worried if maybe there were more issues in some of the documents I submitted originally besides the one it was indicated as the reason for return in the email I got and if I should take it at face value.