Issue: I keep getting logged out automaticlly

When I log in to aarianfantasy it will only take but a few seconds while browsing the forums for me to find that I've been logged out automatically. I've tried logging in and hitting the remember me button but I still get logged out. I've had this account for several months now and I've made sure to activate my account completely so I don't know what the problem may be. I was told to just refresh the page in the chats but that didn't help.