My advanced app clip experience has been stuck in the "Received" state for almost a month. The default app clip works, but if I try to use the url for my advanced app clip experience in iMessage or by using the Link Presentation framework in another app, the app clip doesn't work. The url simply takes me to safari. Everything is green in the App Clips Testing diagnostics tool in developer settings on my iPhone when I enter the url of the advanced app clip experience. I am guessing that if the state of the app clip experience were to show as "Published", everything would work as expected.
This seems similar to the issues raised in the following threads:
https://forums.developer.apple.com/forums/thread/763374?answerId=803107022#803107022
https://forums.developer.apple.com/forums/thread/763530?answerId=803306022#803306022
https://forums.developer.apple.com/forums/thread/763384?answerId=803173022#803173022
https://forums.developer.apple.com/forums/thread/763162?answerId=803193022#803193022
https://forums.developer.apple.com/forums/thread/762213
Can someone from Apple please take a look at what is going wrong here? Is there a bug in the App Clips publishing process?