I was just about to watch Netflix on my TV, but I see that there's no connection to the Internet but that my other devices have Wi-Fi
Aha. And does your television have no manufacturer and no model name?
Lousy prices, I had the problem with my Fire TV, the solution, very awkward:
1: For my ZV, I had to register it with Amazon on the website… I don't know why.
2: Instead of clicking "Show Wlan", enter the name of the router yourself and confirm.
3: Configure the IP address yourself.
4: Use the WPS button.
5: Mediamarkt man asks, realizes that they have no idea and left the store with a ditch.
But if you want to know, ask and don't write that