It sounds to me like a server error with the maps. If y'er issue is with all the maps then ye may just be out of space on y'er computer.
If ye can't get into the first map that leads into all the others, like Edol has mentioned, then 'twill be hard to say if the maps are 'aving a server error, as the other maps may be working perfectly fine. M'recommendation is to wait it out f'er a lil' bit to see if a server reboot will fix y'er problem.
If y'er character is stuck in the maps and would like them back, head up to the right hand corner of the site, log in, head to Character Panel and send them home. G'luck with the maps, deary! If this doesn't solve y'er problem, let us know and I'm sure we will try our best to solve it.