Won't connect to front server

[Nightcrawler]

These past couple weeks only I have been having trouble logging into the game. It says that it failed to connect to the front server. I've tried restarting, uninstalling and reinstalling the game, and leaving the play game tab open. Please help! I'm not sure what's wrong. Thank you.

[Azurain]

Try using a different browser for the login tab. I usually use Chrome or Firefox. ^^

[Jango_Fett]

try opening up the log-in tab and then starting up the game

or

try another browser or incognito mode if you're on chrome?

[Speedyscout122]

Make sure you've entered your password and username correctly is all I can say.

[sanrio]

I've actually been having a few problems with the Login/Play Game Tab and actual In-Game login lately, so we both might be suffering from that. (I've found that it's most likely a problem to occur in the England region, from my own and my friend's experiences, for some reason.)
But, as the others suggested, it's most likely that you should try another browser or clearing your cache and cookies may help.