I can no longer log into Nintendo. What's the matter?

I use the two-step authentication at Nintendo with the Google Authenticator. But now I have a problem. I have a new smartphone with Google Auth. Connected. If I want to log into Nintendo Online's website, I need a code. The app also shows me a code but when I enter it at Nintendo it is constantly said that the code is invalid. Who can help me?

I would advise you to ask Nintendo support, I've done that somewhere else and they sent me a code to reset. LG