(Video) How to Fix Can't Sign into PS4 Account (Error Code NP-31730-4)
Do you want to know how to FIX Can't Sign into PS4 account and fix the error code NP-31730-4. To do this, go to settings, then go to users and account and sign in. At the bottom select forget password and try resetting your password and then log back into. Then go to network and setup a new connection and change the DNS server and test your connection.