Does Not Work for Multisite

The ReCaptcha doesn’t work for multi-site installation. The installation went fine and the network activation went fine. I got the the Public & Priv key from https://www.google.com/recaptcha but whenever I put it in it doesn’t work. It don’t seem to store the keys. I press the save Recaptcha changes but it never saves and gives the error – “You enabled reCAPTCHA, but some of the reCAPTCHA API Keys seem to be missing. Fix this”
Please rectify it or if its a technical snag guide me through it