"A connection to the server could not be reached"

[burked14]

This problem rose completely out of nowhere last night. I have been playing and have never had any other problem. I went link-dead in crushbone and when I tried to log back on, I couldn't, receiving the message at the log-in screen "a connection to the server could not be reached. Please check your internet connection to make sure you are online." Clearly, I'm online... My brother asked to use my account to see if he could log-in on it and he could. So, what is going on? Please provide some info on this stupid problem since I really can't explain what the problem is. I have not messed with any files; I have not been banned or whatever. If my brother is able to log-in on my character on his computer, why can't I anymore on mine? This is so obnoxious. Please let me know.