Featured images non-retina, Breadcrumb Navigation

Hello,

your theme is beautiful, thank you.

I came across two issues, when configuring, maybe I don’t find the right options.

1. The featured images are not sharp on retina displays. You can see that they only load the medium size image, but that is not enough, it should be the next higher resolution for that size like 768 pixels or so.

2. I chose “advanced” for breadcrumb navigation and I installed the NavXT plugin. But it seems, that the settings in that plug in are not chosen. Theme seems to stay in standard mode, not matter what I change in NavXT plugin. Is there another option that has to be set?

Thanks a lot
Stephan