I have an iOS app which it associated domain worked before, I just added a new app ID to the applinks json file but after that the associated domain on my app stopped working.
after some debugging, I found out the Site/Fmwk Approval is denied on Sysdiagnose log file.
I attached both my applinks config and log file results.
sysdiagnose log:
I don't know if it's the Nginx config issue or the applinks json file issue.
Note1: my json file is located here => My-Website.com/.well-known/apple-app-site-association
Note2: my json file has no prefix.
The problem was solved by changing the "appID" format from array to object.
Also, the bottom code added to the NGINX:
location ~ /.well-known/apple-app-site-association {
default_type application/pkcs7-mime;
}