Sign In Utility Page needs reference to consent message

You may wanna try this code:
The script will target the sign in button by its inner text, so you if your button have a different text, please update line 9 in the script.

dem

<script>

document.addEventListener("DOMContentLoaded", function () {
    function addMessage() {
        const userAccountsDiv = document.querySelector("#your-block-name");
        if (!userAccountsDiv) return setTimeout(addMessage, 1000);

        const signupButton = [...userAccountsDiv.querySelectorAll("button")]
            .find(btn => btn.textContent.trim() === "Sign In");

        if (!signupButton) return setTimeout(addMessage, 1000);

        if (!document.querySelector("#terms-message")) {
            const message = document.createElement("p");
            message.id = "terms-message";
            message.innerHTML = `By signing in, you agree to our 
                <a href='#' class='terms-link'>User Agreement</a> & 
                <a href='#' class='terms-link'>Privacy Policy</a>.`;
            
            Object.assign(message.style, { 
                fontSize: "12px", 
                color: "#666", 
                marginTop: "10px", 
                whiteSpace: "nowrap" // Prevent text wrapping
            });

            signupButton.parentNode.insertBefore(message, signupButton.nextSibling);
            message.querySelectorAll("a").forEach(link => 
                Object.assign(link.style, { 
                    color: "#007bff", 
                    textDecoration: "none", 
                    display: "inline" // Ensures links stay inline
                })
            );
        }
    }

    addMessage();
});


</script>