No Images Generated but Credits Deducted

After receiving my invitation and creating my account, no images are generated—just 4 blank boxes with a blue square containing a question mark—but the system still deducted a credit. Using a Mac and Safari Browser. Any suggestions and/or are other experiencing this problem?

Try using Google Chrome. If the images still don’t load, let us know what you see.

I switched to FireFox and the images are there.