navigation controls still not working

I have checked your page https://www.elektrowesthoeve.nl/cms/ and I don’t find my slider plugin activated there. Are you sure you are using my slider plugin?

Hello,
You’re right, I deactived it because of another problem. It is re-activated and working on https://www.elektrowesthoeve.nl/cms/
The problem with navigation still exists.

<div id="slider-laag"></div> thats the culprit, please remove this tag. This div is overlaps on slider div and catching the mouse clicks, instead of letting slider div to do that

You are right, that’s the problem. It adds a shadow-layer so I didn’t remove it but gave the controls a high z-index:

.theme-default a.nivo-prevNav, .theme-default a.nivo-nextNav {
    position: absolute;
    z-index: 9999;
}

Works fine now. Thank you!