Change text invalid error

Set WPCF7_USE_REALLY_SIMPLE_CAPTCHA constant to true and edit the message in the Messages tab.

thank you very much for helping.
but where i have to set it constant to true? i didn’t found it.

kind regards

See Controlling Behavior by Setting Constants

Hello Takayuki

Thank you very much for you response.
Unfortunately, it doesn’t work. I change the code in wp-config.php but there is no new line in messages for changing the text…

Hello

Do you have another solution for my problem?

Thank you in advance and best wishes
Nicole