What is the proper procedure to update the recaptcha. This happens when you request a new password if you are trying to log in to the admin.
Error reCAPTCHA plugin needs a site key to be set in its parameters. Please contact a site administrator.
Hi
https://docs.joomla.org/J3.x:Google_ReCaptcha
You will need to change the registered domain to v2 if have not already done so
https://developers.google.com/recaptcha/docs/faq
Cheers Paul