Google captcha v2 token farming not working

Google Recaptcha version : v2

I tried to farm token of a website's google recaptcha and used it in forget password section of the same website. It's working perfectly.

The way i farm is , open google chrome anonymous tab and solve the captcha and get the g-recaptcha-response and put it another browser.

Hence, i try to do the same way for my actual purpose which is submit booking page. But the recaptcha validation cannot pass through. I've checked data-sitekey of the google recaptcha v2 is exactly same with the one i used to farm the token in forget password section.

Is there anything i missed out ?