I just posted a negative review of the Fire TV 4k (with Alexa) because I can't even get Prime Video from .ca on it. I had an Amazon employee reply to me, which was nice, stating......
We're constantly working to improve Amazon devices and appreciate your feedback
Not much but at least it's something. I was also told months ago when I complained that Canada cannot get Prime Music Unlimited, that they were close to adding it to Canada.....but that was months ago.