Many people asked this question after the order successfully paid, there are several ways to resolve this issue: 1.Check whehter the email address is correct, you can check the email address in customer center or order detail page. 2.If the email address is correct and your email box can receive other emails, please check the trash box, our notification email may be blocked by your service provider, please add our notifications email address:service@sllac.com to the whitelist. If these two ways still not resolve the issue, please contact us through facebook messenger https://m.me/sllac or call us 831-888-0086 , don't email us, because you cannot get feedback from us through email.