Product Images

Since the update to 3.0 and 3.1 the product images have changed. I have read in the changelog about the product image gallery. Now here are my problems.

1. I do not have the tickbox for “enable lightbox for product images” in the settings

2. When you click on an image it redirects you to the file in the wordpress media. Follow the link to test yourself: http://www.secretrivers.com/product/fishpond-thunderhead-sling-schulterrucksack/

3. The size of the images is not as set in the settings. I use the following:
Single products 500 x [empty for automatic] [unticked] hard crop
product thumbnails 150 x [empty for automatic] [uticked] hard crop
I changed these settings several times, regenerated the thumbnails each time and cleared the cache.

Do you have any suggestions what I need to do?