Visual Composer won't load

When I click Edit Page with Visual Composer it has started to get stuck on a blank page or the icon “spinning”. It started out of nowhere, no new plugins, no updates. I tried deactivating the other plugins except for Visual Composer, and still nothing. I tried updating the theme and plugins, still nothing…It does say “waiting for vimeo.com at the bottom of the Chrome browser, but the video on the page has always worked fine. Any suggestions would be greatly appreciated. Thanks!