Thanks so much to Andy for solving this one.
My ISP Cable Company got bought out by Rogers, who is forcing closure of that Company, migrating everyone over to the Rogers' platform. This is happening all over, its how Rogers is expanding. For the Ignite package, Rogers uses their own dedicated space on Yahoo Mail for webmail, if you decide to use a Rogers e-mail address to replace your old e-mail.
Its that platform which will block and put into its spam folder all autos forum notifications. So if you are using, say, Thunderbird or Outlook or Windows Mail or iOS or Android or Blackberry as your 'e-mail client/program', you won't get a thing until Rogers/Yahoo is told they aren't spam. All your autos.ca settings will look normal and your e-mail program will work normally for other e-mails, so its hard to pinpoint.
Hope this helps someone, down the line.