Captchas are set up and working, as well as DMARC, DKIM, and SPF records. Will keep digging.
A related, follow-up question: Is it possible to set different font weight for the summary and text sections (either in themes.json or in style.css)?
Same thing happened to me. I went through the file manager on the CPanel and removed the plugin, but something was left behind which I couldn’t find.
What I did after deleting the plugin folder via CPanel was: I re-installed the plugin, activated it, then de-activated it, and then deleted it from the WP dashboard.
Not sure why that worked, but it did. Hope this helps you if you haven’t found a solution yet.
Turned out the plugin came with the theme, and the theme support said “hi” in chat and never came back. Oh well. I found a fix. Thanks for responding!