User Name has changed

My default login Name has changed. What did I do wrong? How do I fix it?

First of all, welcome to the Homey Community!

To make sure you are aware of the forum rules, please read the Welcome to the forum! post here.

I don’t see what you mean.
Can you clarify?

You’re supposed to login with your registered email address.

The displayed first and/or last name can be changed here:
https://accounts.athom.com/