Hello Kurt,
The given credentials is not working for us. It seems that the username is invalid.
By the way, to resolve your issue, please do the following:
1.) Please edit each of your portfolio items and insert a featured image these featured images will be ones that will display in the portfolio page.
2.) If you do not want the featured image to display in each single portfolio item page, you may use this css code to get rid of it. please add the following CSS code in the X > Launch > Theme Options > Global CSS (http://prntscr.com/evui3r)
.single-x-portfolio .entry-featured {
display: none !important;
}
3.) After making all of the changes, since you have installed W3 Total Cache, please clear your plugin cache before testing your site. This can cause the changes to not take place on the front end. It will eventually show up when the cache regenerates, but it’s not ideal if you’re looking to see your changes immediately. Caching plugins are best to turn on only when you’ve finished building the site.
Please let us know how it goes.