Server or your connection might have had a derp.
Then again, if not, wave your mouse over to the right side of the page on the forum, and you'll see a map name and the # of users. Fluorite tends to have a lot of people in it, if its on the limit or close to it, you most likely won't be able to get in.
I'd suggest making a new character and floofing around in other maps until there are less people there.
