Images not working & toggle period

Hi guys,

Two questions:

1. I’ve installed the plugin and mostly got it working how I want it to. But for some reason I can’t seem to get featured images to work correctly in a widget. I’d like them to be like this https://i.imgur.com/gv7IiBO.png, but all I get is a list of links with no images. How can we do it?
2. Ideally there would be a toggle so people can switch between most popular posts that day, that week and year/all time. Is that possible?

FYI, here’s how my widget looks: https://i.imgur.com/JgD1pO5.png

And here are the plugin settings: https://i.imgur.com/WiPkLpV.png

Thank you!