The new version (2.9.7) has resolved the issue. Thank you Mike.
Thank you for the quick answer, Joseph.
Mike has just released a new version of his plugin (2.9.7) which fixes this issue. I consider it resolved now.
Thank you for the prompt answer, Mike. I tried both suggestions but to no effect.
I managed to get spam warning only once, when I entered “a” as name, subject and message, and “a@mail.com” as an email. Still can’t block other spam messages which are blocked in comments.
If you have time, can you please check that form here:
http://antropov.id.au/contact-me/
I have added debug output which shows $request and $response after a message is submitted. Let me know what other debug information can be helpful and I’ll print it too.