Hi Damien,
It would be better if you provide your site Url too and also Email Us your temporary username and password. Before doing it first of all deactivate all the plugins that you have installed in your dashboard and let us know.
Thank you!
I was able to figure it out. Turns out I need to use PNG files, not jpegs, for the slider to work.
Great. Using jpeg/ png images also works fine. As you can check it in our demo site.
Thank You!