function load() {
    if (typeof frontAPI !== "undefined" && document.readyState === 'complete') {
        frontAPI.getUser(function (userInfo) {
            var logged = 0;
            if (userInfo && userInfo.user_id) {
                logged = userInfo.user_id;
            }
            var phone = null;
            if (userInfo.shipping_address && userInfo.shipping_address.phone) {
                phone = userInfo.shipping_address.phone
            }
            if (!phone && userInfo.billing_address && userInfo.billing_address.phone) {
                phone = userInfo.billing_address.phone
            }
            var iframe = document.createElement('iframe');
            var src = 'https://shoper.smsapi.com/newsletter/footer/03a16aa62749f3abb3984f592e8e34d8beeea44c?l=' + logged;
            if (phone) {
                src += '&p=' + encodeURI(phone);
            }
            iframe.src = src;
            iframe.class = 'row';
            iframe.style.width = '100%';
            iframe.style.height = '620px';
            var footer = document.getElementsByClassName('bottom-footer')[0];
            footer.parentNode.insertBefore(iframe, footer.nextSibling);
        }, {
            lang: 'pl_PL'
        });
    } else {
        setTimeout(load, 250);
    }
}

load();