It looks like the adult section of backpage is no longer available in the states. I understand Canada has different legislation but the CEO of backpage has been arrested so it may be on it's last legs. I personally haven't used it in years but I though i'd share the news.
https://www.washingtonpost.com/news...sure-from-authorities/?utm_term=.e09b1bb816eb
https://www.washingtonpost.com/news...sure-from-authorities/?utm_term=.e09b1bb816eb