Won't login to Applications! Please help.

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http://androidforums.com – Hello. I have a Samsung Galaxy Exhibit 4G. Whenever I try to login to any of my applications via Facebook the window stops loading and reads: Webpage not available. Along with suggestions on what to do. I've cleared my cache and cookies. My main concern is that my phone won't let me login to Spotify with Facebook. I've reinstalled the app and cleared the data and restarted my phone numerous times. I've tried connecting on both my wifi connection and with my phone connection. But it isn't only the Spotify App, it won't work on any others either. Yet it logs out and back into Faceboo (General)