No images appear

Hi,

I’ve been using this plugin for a while and it’s been great, but all the images have recently dropped off – The title still appears, but no images at all, and no error.
https://towardstomorrowenergy.org/ – In the footer.
We’re using WordPress 4.1 and Instagram Slider Widget 1.2.1.

I have it on another site which has not yet been upgraded to WP 4.1, and it’s still working beautifully – https://www.thelightingguild.org/ so I’m hoping it’s a quick fix ….

Any ideas?

Thanks!

https://www.ads-software.com/plugins/instagram-slider-widget/