To my knowledge, even though the WES says you're "Canadian equivalent degree is a first professional degree in medicine( Doctor of medicine)", you still need to do the ECA by MCC. Again, this is to my knowledge.
Good luck.
That means you haven't signed your document yet. Open your application and keep navigating until you reach the page where you uploaded the document. Then click "Next" and you'll be able to sign.
I was in your exact same situation. I did the WES then ended up having to do the MCC as well, so don't waste your time and always stay on the safe side.