Ok, thanks. I’ll have to leave that feature off and try to find another way to fix it then. At least (unlike my original post) it’s now at a point where I can keep the plugin for the “read more [title]” function which is still useful.
I uninstalled the plugin, reuploaded the base theme (not my child theme), and then installed the plugin again. It didn’t wipe it out this time. Definite improvement.
But it’s still not quite perfect. Now instead of two “Empty Button” errors (using WAVE plugin), I get those plus two “Multiple Form Labels” errors.
The site is https://alliterationapplications.com. For now I’ve left it enabled so you can see what it is doing.