So I created a Spotify account for my little brother and it asked for a username. I created one for him but instead of it appeared a combination of numbers and letters. Is there any way to change this?
The team in charge of this are still looking into the underlying issue.
Here's three work-arounds you can use at the moment:
You can link your account to your Facebook profile by following the steps here. Your Facebook profile name will now be displayed on your Spotify profile.
You can create a new account, making sure to do so on another device, preferably on desktop, and then transfer all your saved music and playlists over onto the new account by following these steps.
Get in touch with support and they will be able to manually attach a Display name to your account.