Hello,
Having the same issue. My apple-app-site-association file is hosted on an internal dev server that's only accessible through VPN. The Cisco VPN on my phone is turned on. However each time I try to hit any of the links specified in the AASA file, the website opens instead of my app, and there is no native app banner on top, meaning: the AASA mapping is not working for all URLs on a server that's behind VPN. Are there any suggestions on how to get AASA links testable by QA, behind VPN on the test environment?