clickAction in companion keeps opening the app instead of website

Tags: #<Tag:0x00007f78004c9148> #<Tag:0x00007f78004c9058>

Whenever my webhook gets triggered I created this action:

    clickAction: 'http://URLTOOPEN'
  message: Nieuwe films beschikbaar op CouchPotato.
  title: CouchPotato
service: notify.mobile_app_iphone_11_van_bob

However when I click the notification it just opens the HA app and not the website in the action.
Anybody any ideas on this?