Hi Martijn,
The layout of the notifications differs a bit per Android device. It looks it decided to collapse the notification in this case. There is no way to influence that directly. For most Android devices it will show a more extensive text for the top notification, but collapse it for the other notifications.
When targeting Lollipop or up in your AndroidManifest Android will no longer show colors in the notification icon as part of its new design. It will only look at the alpha channel. You can change the icon of the notification by setting the notificationSmallIcon property in plotconfig.json, so you can set an icon that looks well in just a single color. You can also change the accent color of the notification with the property notificationAccentColor to further customize the look of the notifications.
All the properties for plotconfig.json are explained at the reference:
http://www.plotprojects.com/static/docs/android/com/plotprojects/retail/android/Plot.htmlPlease let me know if something is still unclear or if you have further questions.
Kind regards,
Mark van der Tol
Plot Projects