Thank you! Before I got to that, I checked with my site host (DreamHost), and they fixed it and added the following tip which might help anyone else who is facing this issue.
“If this happens again you can login via SSH and in the WP install folder or below you can run this command:
wp cache flush
That is a wp-cli command from https://wp-cli.org . Very handy for
managing WP, by the way.”
Thank you for your help, @paulwp. I appreciate it!
Thank you. I do see a cache in the toolbar atop the page. I tried the “flush all pages” option, but am still getting the same message when I try to get to the dashboard.
There are also options to purge database cache, or to purge only the page I am on. Should I try one of those?
Thank you! Jetpack has some very helpful features, so I look forward to seeing this fixed.