Slider is not sliding at all, I see only background of slider.
Inspecting element shows that images are hidden behind sidebar somewhere and further behind the sidebar.
That means fixing all CSS around.
Maybe it is broken for newest WordPress version or the theme Hueman.
sounds like a conflict issue with your theme or another sidebar plugin.
Don’t know if you’re a WP developer but it’s quite difficult to produce a plugin that will work with every other wordpress plugin and theme…
I do that for free and a receiving 1 stars reviews like this, without a support request or a bit of information to resolve the problem is not encouraging at all…