HELP!!! Cannot login to Facebook on Safari

I am really becomming frustrated with this issue. I have never had a problem before and I have not changed any settings on my IPOD. I have been having this problem for the past 2 days. I cannot login to Facebook on Safari. It started with my using an app I use all the time. The app uses Facebook to login. Entered my user name and password (on Facebook) and the page just refreshed. Tried again......same thing. Tried a different app....same thing. Tried to just go directly to Facebook on Safari and login.....once again, same thing! I have tried everything from deleting the history on my device, deleting cookies and data, did a couple resets of the device. After a reset yesterday, it started working again but that only lasted a couple hours and then it was back to not being able to login. I am becomming severly irritated with this issue. I just want it fixed! Any help or advice someone can give would be greatly appreciated!