Hi, thanks for your review. In some cases, SMS won't arrive as certain countries are not supported, you can find that here: https://support.yoti.com/yotisupportsite/article-detail?type=Businesses&product=General%20Business%20Questions&articleId=ka0Py0000005VZRIA2&category=App%20and%20services, if your country is there, contact us at help@yoti.com