WP-Recaptcha error

I updated wp-recaptcha plugin from 4.0 to 4.1 and in the frontend I see this message. In the backand I entered correcttly both public and privates keys."ERROR: Global site keys are not supported"So now wp-captcha does not work. What is the solution? -- You received this message because you are subscribed to the Google Groups "reCAPTCHA" group. To unsubscribe from this group and stop receiving emails from it, send an email to recaptcha+unsubscribe@googlegroups.com. To post to this group, send email to recaptcha@googlegroups.com. Visit this group at http://bit.ly/1dkFnYd. For more options, visit http://bit.ly/P65DvS.