The old headsets will be functioning as of the next update, Sony was always clear that they wouldn't work right away but they would get them working, no need to go buy a new headset as none of the PS3 ones will work right now anyway.
PSN is either down for maintenance or just overloaded right now from what I'm reading. Hard to tell.
How's your PS4 working with the 1.50 update installed? [If it's installed] there seems to be some question as to if the update is stable. It's hard to separate the people who actually have problems from the trolls who just want to make the PS4 look like a total failure.