Images can't be inserted into the slideshow

@alesub, sounds like a conflict with another plugin. Could you try following the advice below?

Firstly, disable all of the other plugins you have activated (or as many as you can). If the issue persists, with just Easing Slider “Lite” active, it is more than likely a conflict with the theme.

If the slideshow works when it is the only plugin active, you’re experiencing a plugin conflict. Carefully enable each plugin, one-by-one, checking the slideshow each time. Keep doing this until you activate the plugin that breaks the slideshow.

Let me know how this goes.

Hey again, did you get anywhere with this?

Going to mark this as resolved, but feel free to get back in contact if support is still needed ??