Does not really work…

Ok so i installed plugin, added two slides(everything accordin to instructions) and effect was… well dissapointing:
http://s12.postimg.org/ya3vsdgj1/slide1.png

can’t really figure what is wrong, but it’s the first plugin i tested with this kind of result.

Any help with that?

https://ww.wp.xz.cn/plugins/rift-slider/