Hi there! Are you possibly running into the "Download latest patch" message? If so, visit this >link< (https://drive.google.com/file/d/1gXvgzadOoOXNqFfaXWHfEUJ6PeZNwU4R/view?usp=sharing) and download the game again from there and install like normal.
If you already have and you keep failing to connect to the front server, be sure you are logging into the >Play Game< (https://feral-heart.com/login/index.php) tab located in the top of the screen and logging in there with your game user and password and leaving that window running while playing the game.
Hope this helps!