See the "Recommended Relay section" at the end of your relay list and hit add on the authors you want to see. That adds those relays to your General list and the app will use them to download posts from. 

 Looks like post in question was deleted 

nostr:note1zdezr8mrpfy8lemje887dxmhtyl945alc9ql47pnkhzjzrfn8jeqt2wd0h

Maybe I have a local cache copy?