Does this currently work?

Hi

I’m trying to use the plugin, but the image map isn’t working. Here what I did:
1) Created the image map first on the media library by selecting “Edit more details”, then “create image map for size ‘full'”
2) There I added three clickable rectangles with some links an titles
3) Pressed the “Update” button
4) I set the image as “Featured image” of a page

The image is displayed, but the image map doesn’t works. I tried to edit the image map by clicking on: “Open image map for editing”, but nothing happens. I can’t edit the image map any more.

Is this plugging working? I’m using WordPress 4.9.6 and the Twenty Seventeen theme.

Thanks

Best regards
Josef