Here maps on places_map example doesn't work as expected

As mapquest has discontinued its free service, the default osm plugin would not work any longer.

So I decided to try out HERE maps.
I created an app there for free and changed the qml code of the places_map example to

Plugin {
id: myPlugin
name: "here"
PluginParameter

{ name: "here.app_id"; value: "XXXXXX" }

PluginParameter

{ name: "here.token"; value: "YYYYYY" }

} //! [Initialize Plugin]

On Qt 5.5 I'm getting the places but not the maps. On the console, I'm getting "The operation couldn’t be completed. (kCLErrorDomain error 1.)"

On Qt 5.7, I'm just getting the HERE background but no places nor map tiles.
And in addition to the error I'm getting for 5.5 I'm also getting a few qt.network.ssl: Error receiving trust for a CA certificate

Am I doing something wrong?