To change your username, follow these steps:
- Go to Menu > Settings > Account (by selecting your username).
- There you will see a box with your current username, where you can enter a new one.
- Finally, select "Save", in the upper right corner, and your new username will be registered.
Keep in mind that the chosen username must not contain capital letters and must be unique, that is, it cannot be used by another user.
If the one you want to add is already in use, you will receive an error message. In this case, try adding a number at the end.