Did you solve this? I am having the same problem. The server logs don't show the app ever went there.

Same problem here. I am using the example app shinny. In associated domains I am using my full domain sub.mydomain.com for example. So I have this webcredentials:sub.mydomain.com?mode=developer I can get https://sub.mydomain.com/.well-known/apple-app-site-association from my server so that works. Both my server and the phone are on the same subnet, but not reachable from the internet. I don't see the request logged at my server, which I expect I should. So the app is not hitting my server. But the documentation says it should???

Thank you Garrrett!

Is it possible to not show the open app question to the user and just go directly to the app when using a universal link?