These are public forums. Do not post private details here. Delete your reCaptcha keys and regenerate them as you just posted them in a public place. Folks this should not have to be said. Never post private details here. We are not responsible for what happens to your site or if API keys are abused by posting them here.

Regarding your issue it's likely due to the Moderator View Access Level being set incorrectly within CB > Configuration > Moderation. Moderators are exempt from Captcha. So if moderator view access level is set to Public for example then everyone has moderator permissions, which is not good. That setting should be set to something very strict; ideally a new view access level that includes only the usergroups you want to have moderator permissions. If still not working ensure CB AntiSpam in CB > Plugin Management is Public and Published so it's loading correctly.