Ethan
The issue is happening with all the links on Facebook. Please visit the links through mobile on because I also see ads when I visit the links on desktop.
Ads showing only on desktop is also a problem for me because 80% of my traffic comes from mobile users from Facebook.
Even if there is a country traffic issue, (the traffic is coming from tier 3 country) there should be at least 1 or 2 display ads but there's none when I visit it through mobile.
When I visit my website, the ads will be loading with space left over there but within seconds, the space closes up and the website becomes normal with absolutely no single display ads.