I assume you're using it in bridge mode, right? I have not tried using WPS, I always go the manual setup route. I just linked my 1522 up to my 610N (on 5ghz N) yesterday as a bridge. I would suggest starting over from scratch, resetting the unit, reconfiguring manually.
If your current subnet is NOT 192.168.0.XXX, I would also suggest making sure you give the unit a proper static IP address that falls within your default LAN IP range.
Keep in mind, the network light does continue to blink orange when in bridge mode, so make sure you're not confusing that with the power light.