Netflix movie thumbnails won't display

Hello

The movie icons on Netflix won't show on Safari on my Macbook. As you can see in the image below. This is only a problem in the Safari app on my mac. On Google Chrome this is not a problem. How do I fix it?

I've tried clearing cache, web history, relaunching safari etc. Maybe it's got to do with the wifi settings / servers ? But that would also affect Google chrome which it isn't so IDK. Please help. :-)