I lost again my connection today so I spoke with the NordVPN Team.

They asked me to send the log and to :

  • Change the DNS in order to use the NordVPN DNS (previously I used the DNS of Google)

  • Download any UDP configuration file, open it with any text editor and then remove the following line:explicit-exit-notify 3 because Gl firmware doesn’t understand that line therefore causes the issue with UDP configurations.

So I will test this to see if I can keep my connection now.