OK "psnservices" first off do you own desire engine? Second are you on cex or dex?
Jamesthao, you have to list the game, wait for DE to login, click x at the login success screen then wait a couple of seconds *IMPORTANT* HIT YOUR PS button and login from the sign in option on the translucent XMB that pops up, do not just hit play online because it will not work. Or you can start a local match with or without bots and then use the same method of signing into psn through XMB, then wait for the lag, end game and then play online once you are signed in to psn