I recently changed my theme and picked the Forever one. I was trying to set up a post slider following the instructions on the theme's page but it doesn't seem to be working. I have sticked the posts I want to be on the slider, and I also set a featured image for each one that is 887px wide. The Slider just doesn't appear and I noticed that, when I upload the image onto WordPress, it seems to be automatically shrunk, because the full size option on the properties says the image is only 640px wide. What am I doing wrong?
The blog I need help with is reflectmirror.wordpress.com.