Ask PlayStation on Twitter: "@Mahdiyar09 Hello, glad to assist you! Can you please provide us more details of your problem, what are you trying to access in your console at the moment?
PlayStation Network Down and How To Get It Working Again — REDELIJKHEID
PS4 Error NW-31456-9 Fixed – 100% Working Solution
Как исправить ошибки NW-31456-9 и NW-31201-7 на PS4?
How to fix 2 main errors on PS4 - ERROR CODE WS-37397-9 and NW-31456-9 - YouTube
How To Fix PS4 NW-31456-9 Error
PlayStation Network Down and How To Get It Working Again — REDELIJKHEID