Hi, another thanks for great plugin.
Find an issue:
into additional settings, the strange behavior of conformation message. Any messages like "Failed", "Spam" appear, but "Good". Even if to embed custom [response] shortcode it doesn't affect appearing "Good" message.
After I deleted "on_sent_ok" from the additional settings it works just fine.
So, I have only two choices: track form sending or be polite to visitors to say them "It's OK with your message"
Could you please help to resolve the issue?