Hi Robin,
Sebastian here, I hope you are doing well. Thanks for the detailed report, and good thinking on comparing the two sites on the same host. That side-by-side made the difference easy to spot.
I went ahead and checked robinleehatcher.com from my end, and the good news is that Jetpack is now running on the latest version. Whatever was holding the update back has cleared, so you should be back in sync with what the other site is showing.
To keep this from happening again, you can switch on automatic updates for Jetpack (and any other plugin you trust). In your WP Admin dashboard, go to Plugins, find Jetpack in the list, and click “Enable auto-updates” in the right-hand column. Once that is on, Jetpack will update itself in the background whenever a new version ships, so you do not have to think about it. The full walkthrough is here: https://jetpack.com/support/update-jetpack-and-other-plugins/#:~:text=Automatically%20update
If you are enjoying Jetpack, could you give us a 5-star review to help us spread the word about our plugin?
https://wordpress.org/support/plugin/jetpack/reviews/#new-post
This will help us promote our product and the support we offer to our users. We appreciate your time in advance if you can spare a few minutes!
Thanks in advance if you spend some minutes of your time!
Warm regards,