Why isn't my app getting listed despite meeting all requirements?

Shopify Apps
1

Hello I have been receiving this message. Even after going through the link and following all steps.

Please Help

Requirements that must be met before initial screening
  1. App must set security headers to protect against clickjacking.
    Your app must set the proper frame-ancestors content security policy directive to avoid clickjacking attacks. The ‘content-security-policy’ header should set frame-ancestors https://[shop].myshopify.com https://admin.shopify.com, where [shop] is the shop domain the app is embedded on.
  2. App must be served over HTTPS.
    There was an error connecting to your app. Make sure its App URL and Allowed redirection URL work correctly.