Usually when your username has changed to numerical username it is because you linked your account to your Facebook. When you closed your facebook, it changed your Username because it doesnt have the information it used to have when it was linked. The best way to get your username back is to create a new account on spotify and ask customer service to close your numerical account. They can also transfer your playlist too. Click on this link for Customer Support.
Keanu_CRock Star 6
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