Usually it’s this, but sometimes the Recaptcha doesn’t even load (looks like an IP ban). I just submit the form, and then get an error message saying I must complete a Recaptcha, but there’s no evidence in the page of any Recaptcha to fill out.
I’m on a residential ISP. I’ve checked every IP address reputation system I can find, and see no problems (except from “Clean Talk”, but they’re so small that I doubt Google uses them).
Also, I hate knowing that I’m doing unpaid labor to help train an AI that will make the world a worse place.
Maybe it was a phishing scheme to identify people’s IP addresses based on where they loaded the image from. In that case, each person would only receive one message. Fortunately I use a proxy, so they got nothing.