Have they shutdown server support for psp?

Ive dusted off my old PSP 3001 and booted. Little big planet. I tried downlaoding custom maps but it keeps saying i have to sign into a psn account. When i try to do just that on the main menu i keep getting an error code. It has been a really long time since i kept up with any psp related news so some insigt from those still on top of things would be really appreciated