Well, the server is actually down right now. But when the server is up again, try opening the game up by right clicking the Feral Heart icon and 'Open as administrator' if not, wait until Windows finds the problem or right click the Feral Heart icon again and click 'Troubleshoot compatibility' which will also help you find out whats wrong.
Hope this was any help to you~
Easy way-Just readownload it i ussaly do that cuz i always mess up the files XD
She already said she re installed it. lol. But the options I set out are the safest ways, so it won't slow down or damage your computer.