Steam’s Recaptcha v2 Enterprise requires specific parameters like s, and missing them can lead to errors. ERROR_CAPTCHA_UNSOLVABLE usually means the solver couldn’t process it, either due to missing data or complexity. Make sure datas includes all necessary fields.also u can look this https://docs.capsolver.com/en/guide/captcha/ReCaptchaV2/ it may help to test different services. Checking the full request payload can also clarify if additional parameters are required.