Why are Deeplinks from browser not working?

Question

I've implemented deeplinking in my ionic 4 app and everything works fine with:

1. URL Scheme links from the browser, e.g. "myapp://home"

2. Universal links when called using ADB command, e.g. adb shell am start -a android.intent.action.VIEW -d "https://mywesbite.com/home" com.mybundleid.com

However, it does NOT work when clicking a Universal link from the browser directly, e.g. "https://mywesbite.com/home"

I have my assetlinks.json and apple-app-association files set up and on the domain.

What am I missing?

Please help!