Signed into someone else's account?

I- Usually when that happens someone else is signed in on your account. So I was just telling you to make sure no one else has signed into your account.

Sounds like someone else is signing into your account! Ive never gotten the Goodbye message for a connection loss, but it does pop up when someone else uses my account. Id check with your friends and see if someone is signing into it, and change your password
to prevent this from happening in the future .

If it let you use the name, then it's yours now. It's not someone else's account. The only way it could be someone else's is if you signed in with their information, not created a new account.

When you get gold you'll need to add it to the account you want to continue using.

Someone else would have been signed into your console at some point and set the console as their Home. It would not have involved your account at all or you signing into anyone else's console.

You would have to be signed in on the account you want it on. If it's someone else's account, you would give them the code.