Remove Green or Blue, those 2 color when exist in same page make it seem poor 2002 html
Balanced Classes, Fixed skills -> Remove. Those things shouldnt exist in a server's preview. Those are "must" features no extras. Also there is no balanced classes and fixed skills. Even official has 98% working --
Replace "Features", "Gameplay" e.t.c with some image (photoshop text), to make it seem a bit more nice. No just plain text, plain text.
Hero coind -> Hero coin
Interlude custom server is not a feature remove it.
L2j OFF Paid Geodata nobody care nobody believes it. Remove it this belong to "must"
[not full] give more info or add a link that redirect to your forum and give info
Purple text make eyes really tired after a try to read.
Get a designer for 30-40e to design you a nice logo and a layout. Advertisment is really important. if its poor the content gonna be poor also. Extremely graphical make server mainstream also. So try be between those. Youre currently in poor.
Again as i said get a designer, your website's logo is bad you need a better one.
Sincerely,