If your site has been disapproved or is missing an SSL certificate, you'll need to add this in order to advertise on Google. If you collect or handle personal or financial information on your website, it must be secured with an SSL certificate. Your store may be labeled as secured and encrypted, but attackers can still collect information before it is processed by your store.
Please contact your website developer or web host in order to receive assistance with getting a SSL certificate. Once your site contains an SSL certificate, make sure your website address contains https:// also (you may want to setup redirects if needed).
If your campaign is disapproved for this policy, please reach out to firstname.lastname@example.org once corrected to get your campaign approved. You may also contact email@example.com with any questions or request assistance with your disapproval.