For those who get the error code 2124-2954

Hi, I fixed the problem with the Fixnat app, which is available on the Play Store. Another user recommended it to me, and it worked! Now I can link my Nintendo account and do online activities normally. The app itself has a tutorial on how to use it. The only catch is that you'll have to be quick; the free trial is only 10 minutes, although that's more than enough time to connect the console and fix the problem. That's all for now. Good luck to everyone!