Wildcat Test assignment submission trouble

Hey, I'm having some trouble with the submission for the wildcat test assignment;

I've finished the model, went to the wildcat page of the model, clicked the round #1 tab, wrote a message and attached the .zip file; clicked the "Send message or add files" button. However there's a message at the side of this button: *Adding files or sending a message doesn't submit the request. Click the button below to do so.

The "Submit request for review" is disabled, I can't click it no matter what. (And there's NO button below the aforementioned message)

So how do I submit the model ? (My deadline is february 11)