Username displayed on my parameters corresponding to my password

[02souitch]

Plan

Premium

Country

France

Device

Nokia 8

Operating System

Android 9

When I go on parameters in the spotify apps, The name displayed is not my username, its my password, I change my password but it displays my old password. It's a really big security issue I'm having here. I don't care what is displayed as long as it's not my old or anyone of my passwords.