You could possibly consider having NordVPN on your router instead of directly on your machine. If you don't want all of your connections to be using the VPN you could potentially create a dual modem, and router setup. Running dd-wrt software on the router with the VPN on it, and only connecting to that router whenever you require using the VPN.
I believe having dd-wrt, VPN, and scheduling a reboot fairly regular is one of the more secure ways of going about this. A benefit of this is router ram gets flushed every time its rebooted. Not only that but the VPN will always be on, so there's no forgetting to connect via the application. You can also use a killswitch feature which will prevent any DNS leaks, and the internet won't connect without the VPN. This means less bloatware on your computer, and likely less mistakes as having the killswitch directly on your application means it needs to be running, unless you do it from your operating system instead.
This in return should offer a quick connection without having to connect via its application as its done through the commands on the router. Otherwise, putting your operating system on a SSD will increase load speed. The application itself works fine generally on both AMD, and Intel based software.
I am not a NordVPN customer for long time, kinda very new to them. When I try to connect the connection always fails and the message always says something like, "password verification failed".
The CS said resetting password do the job but it really do not work much. Is this normal?
I have intel system by the way.
You would need to provide a bit more information. Making sure that the password you are inputting is correct. A common issue users have is when their keyboard has changed language. Especially, from English (US) to English (UK).