Wrong title shown

The plug-in is showing the old title on articles. I changed the title of an article before the comment was made, yet the plug-in is showing the old title.

Reference: https://blog.solidsignal.com/tutorials/first-time-2017-ill-nag-grounding/

Note the title and then look at the display in the plugin

The page I need help with: [log in to see the link]