By the way, let me give you some tips on debugging.
When you Diagnostics, you must fill in the domain name + prefix in your app clip, not just the domain name. For example, "render.alipay.com" is the domain, it is App Clip url is "http://render.alipay.com/p/s/ulink/", when you Diagnostics this url you will get the answer(It doesn't set Smart App Banner). If you only Diagnostics domain names "https://render.alipay.com", you got nothing correct.
How to determine whether your App Clip is successfully released in App store? First we have to distinguish what is App Clip, Default App Clip Experiences and Advanced App Clip Experiences. When you successfully listed your App that containing an App Clip you can bring up your App Clip through Default App Clip Experiences. The method is to set up Smart App banner on the website. Tutorial
Only after you have eliminated all issues, then you can determine whether Advanced App Clip Experiences is not taking effect and remind Apple’s reviewers the next time the app version is updated.
Topic:
App Store Distribution & Marketing
SubTopic:
App Store Connect
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