How to Change User ID
If you visited your accounts page, and tried to change your user id and were unable to change then we want to inform you that it is meant to be that way. You can’t change it. We allow high level of customization for your account, but we don’t allow to change it, to ensure you can be tracked with it. Your all activities are linked with your user id only. But if you want, you can change your Profile Picture, Cover Photo, Name, email etc.