Last time, also after an update the icons used in the project were gone. It was than said I misplaced scripts what would cause the issue.

That seems partly or not true at all, since today after an update the icon in the green field top right of the screen, a car, is gone again. 

https://www.clubtaxi.nl/taxi-lisse.htmlas example of how it should not look, compare with:

https://www.clubtaxi.nl/en/taxi-lisse.html

Frustrating at the least