I have developed & installed an iOS app locally on my device.
And have set custom scheme in the info.plist as mydlink
Set associated domains
sometimes we make a mistake in Associated Domains entitlements. There have to be no spaces
applinks:mydomain.page.link
I make a mistake that not setup Associated Domains for DEBUG, so make sure you setup Associated Domains all both DEBUG & RELEASE
Make sure you have a Team Id set in the firebase console for you app. (you will then need to download and import the .plist file).
This fixed the problem for me.
i had same issue with latest flutter sdk and firebase dynamic links plugin.
Tried all solutions the only fix was to manually insert com.apple.developer.associated-domains key to ios/Runner/Running.entitlements file
<key>com.apple.developer.associated-domains</key>
<array>
<string>applinks:abc.page.link</string>
</array>