No need to get ruffled, nishikoto, we understand how frustrating it is!
This most definitely sounds like a connection issue on your end. Try to remove proxy settings:
That means you either have a proxy configured somewhere..
http://www.enigmasoftware.com/how-to-disable-proxy-settings-browser/
There's a little guide to turning them off.
Edit:One other thought if you find you have a proxy setting that refuses to turn off chances are you have a virus
Or your internet is forcibly pushing your we connections though some other proxy.
Which for one is very anti privacy and also a little out of scope of what I can help you fix.
Attempt to clear your browser of its caches and cookies, whichever browser you may use.
https://kb.iu.edu/d/ahicMake sure you have no bulky programs running that could interfere with the connection (Skype, Discord, etc. things that use the internet basically).
It also may be that you FeralHeart IP and your provider's IP are different. If that's the case, then I am afraid you won't be able to log in until it fixes itself? In my case, it did.
Best of luck to you, honestly! I hope you can get into the game once more and enjoy!
EDIT: Mac user? Take a peek at this guide!
https://feral-heart.com/smf/index.php?topic=63761.msg877961#msg877961 It is for Mac users exclusively.