Ah OK! I changes some security software because the site was getting hammered with spam (mostly bots I assume but probably not the Martha Wells variety) and also trying to improve performance to speed up the page load.
I was NOT HUMAN! I missed it first try, then it didn’t believe my math till the third try! I feared emailing paul and saying I apparently flunked second grade! Lol.
I changed this to a reCaptcha today because the bots were defeating the math challenge. So now you just need a checkbox to prove your humanity. So at this point nothing is proven...