gistfile1.js

var timer;
timer = setInterval(function () {
    console.info("check exchange-submit-btn");
    var exchangeBtn = document.getElementById("exchange-submit-btn");
    if (exchangeBtn) {
        clearInterval(timer);
        exchangeBtn.click();
        timer = setInterval(function () {
            console.info("check ik-authcode-input");
            var authcodeInput = document.getElementById("ik-authcode-input");
            if (authcodeInput) {
                authcodeInput.focus();
                clearInterval(timer);
            }
        }, 10);
    }
}, 10);