@ltimoniels
Try this (I’m not technical in the slightest) but mine is now working.
Go to IG, Settings, Apps and Websites and see if your plugin expired. Mine had and it was called “10Web Hashtag Feed Plugin”.
On WP and with your plugin activated, scroll down the left sidebar on WP till you see “Instagram feed” and then “Settings” and you will see the red button that says “Connect an Instagram account” so I did and it works for now anyway. There is a new plugin that is now active in the settings on IG called “social feed feed”
Good luck to you