python-AntiCaptcha not working with web application which requires authentication

we have integrated `anticaptcha API `using the library **`python-anticaptcha`** to Bypass the `recaptcha V2` on an application that requires authentication (user-password), the API manages to return a TOKEN, but this TOKEN does not work on the page.
we tested the same thing on a DEMO page, and it works.

- Is it because we are on a web application with authentication? is there a way to handle this?

_PS : we dug deeper into the browser emulation but it still doesn't pass (the error message is: **`Invalid reCAPTCHA.Please try again`** , even though I passed the token directly on the page (the hidden input of recaptcha-response )_