"Incorrect response. Please refresh the page" error
If you get this error message when attempting to link your console to an existing Epic Games account, it likely means that you entered an incorrect password or are logged into the Epic Games Launcher on another device. If you receive this message, make sure to close your account on any other device
If you get this error message without attempting to link your console, it's very likely due to a failed captcha when logging in. For such cases, follow the steps mentioned here: How to fix CAPTCHA issues when logging into your Epic Games account
If the previous steps did not work for you, changing your DNS and then flushing it can help you resolve this issue. For a detailed guide on how to do this, you can check the resources below: