this is out of our scope you would need to ask the Plugin Author.
But as a pointer check that you have given your Slider Width and Height properties that suit your images.
GP doesn’t do anything that would effect the plugin, i have used it on several sites. Check the advanced settings in the metaslider such as the stretch and smart crop options.
Hi
I find when I add the metaslider shortcode to Elements->Header, the positioning option seems to have no effect and my slider is always left justified.