Recently I changed my router(PS4 Cant connect to my old router). I connected to the internet in ps4 well. But after a time it cant use NAT and always I check the NAT type mark as faild. Error code is: NW-31374-8
I did:
Restart Router
Restart PS4
Enabled UPnP in router setting
Enabled DMZ for PS4
Opened all ports in both protocol UDP & TCP
But no changes and still no NAT type and cant play online.
Any solutions please?