frontier theme – slider not working

im using frontier theme on my website at http://www.gnpwebsites.com/

I setup the slider, assigned a category and loaded images to the articles however the slider simply wont load http://www.gnpwebsites.com/

I tried deactivating other plugins but that did not work, I also check 10 times to make sure the image I setup to the post as featured image work and they do

what can be causing the slider to not load the images or Show Post Title or Show Post Text

If someone can help me fix this id appreciate it

thank you