I have my PS4 since last year and it has been connecting fine to my WiFi network until today. I woke up and the PS4 notified that I needed to connect to the internet. Tested the connection via ps4 and it was not connected. Tested the connection via other devices and they were fine. PS4 informed that the WiFi password was incorrect. Re-entered the password, which is the same in other devices (re-checked) and it still didn't accept the password (error NW-31297-2). The distance between the WiFi router and PS4 is short and the signal strength has always been at the maximum.
It seems that it is something with the PS4. I tried to sign out from the Playstation Network to then sign in again, as I saw in a different post, but I can't sign back in without the connection. I can't do any other reconfiguration in DNS/IP/etc. as I can't go pass the password page.
What do I do?
P.s. Ethernet cable is not a viable option for me