Yes. That is what the letter said, except that California DOESN'T recognize the foreign notary or a Canadian Apostille. Florida did for my AKL points recently, but California, not so much.
Unfortunately I found this out after telling my guide I would be heading to my lawyer to get the documents notarized, paid the money, and sent back my docs to Disney AND being turned away from the DL DVC centre who didn't have anyone available at the time I was there to notarize my documents. It's been a huge hassle.