Because the staff is very small and not very knowledgeable.
The solution to this is to employ more knowledgeable staff. If money is a problem, maybe stop paying people to spam the forum with signature ads and use the money saved to pay for competent support staff. There's little point advertising the site when it isn't ready to handle increased traffic yet. New people will visit, be disappointed by all the broken stuff and lack of support, and not stick around. Better to focus on fixing things first, and then bringing in players later.
The other solution is to have current information on the site. There's many areas where one page says something and another claims the exact opposite. Depending on which answer players read first, they will think it works one way or the other, and support is usually set in their ways that x is correct and even if their site claims otherwise, you're still in the wrong and not them. Had an issue in the past where support claimed I was wrong so I took a picture AND sent them a link to their OWN site proving I was right. Support then told me they were removing the incorrect page and I was pretty much pushed away after because I, as a player, should have known their site has incorrect information.