I am having the same issue. Added new advanced experience cards 6 days ago and the changes are still not published. When updating an already published experiences, changes take less than 24h but adding a new one has become problematic in the last months.

I am having the same issue. Tried with their support but the problem persists and only got referenced to the this forum and to the documentation. A current workaround: Editing an existing advanced experience is faster (within a day) than adding a new one (more than a week). We are registering subpaths with a generic card and then editing as we need them.

I am having the same issue. I discovered that editing is faster than adding new experiences so my workaround is to add 'placeholders' and then edit them as I need them. The edit usually take less than a day. Adding a new one is taking longer than 2 weeks. The UI on Apple Connect shows status "Received" but if you inspect the JSON you will see the actual status. In my case they all appear as 'Published' but still the latest are not working properly. Something is broken or heavily delayed in the propagation flow of Advanced Experiences.

Any solution? Maybe the Smart App Banner is required?

Same issue here, any resolution?

Seems like the 404 might be the issue: From Apple's docs: When you add the meta tag to your webpage to support invocations from Safari or an SFSafariViewController, you automatically add support for invocations from links people share with others in the Messages app. When a person shares a link to the website that displays the banner or App Clip card, the recipient can tap the link to instantly launch your App Clip.