Microsoft Jigsaw, wrong login info, now can't change

This has been a problem for years. Basically it doesn't work

Hello!

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I entered the wrong sign in name when signing in to Microsoft Jigsaw and now can't change it. It's given me a random new name which is different from my xbox console companion app and I can find no way of changing the sign in details, even by uninstalling
and reinstalling.

I've tried logging out and in again multiple times. The console login information is correct and doesn't match the jigsaw login, which is the part that really makes no sense to me. If I log out of the console then open jigsaw it offers me the ability
to put in a password for the incorrect login name, but doesn't let me change it.

Hi,

have you looked in the settings if you can change it?