The Canadian Hyundai Mapcare site had a Report Map Errors link that took me to the third party HERE Map Creator site where I had to create an account. Once I did that, went back to Mapcare, and clicked Report Map Errors again, it took me directly to a map editor! I figured out how to convert the old road through/to my neighbourhood into the community trail that it is today, but I didn't draw in the new road because I'd like to get accurate GPS coordinates for all the corners and bends first. I think it's a bit crazy that they let just anybody do edits, but ideally they vet them and hey, if it fixes my navigation...