Cordova can't launch external app

Hi there!

I am having problems launching external app in my app.

I think I do have correct access rules setup:

App.accessRule('com.aevi.payment://*', {
    'launchExternal': true

However the aevi app does not launch, even though it works from browser with:

<a href="com.aevi.payment://purchase?xxx" class="btn btn-block btn-primary">Pay by terminal</a>

There are no cordova build time overwrites and no console errors… so I am quite cluless why it is not working…

Thanks for any help.