Cannot change username

Hi,

A company I work for has decided to use Teams for its internal communications and I'm faced with the problem that my user name is only the word Info - the start of my email address. I have no access to change it and when I try to use the Manage facility, I cannot log in and get the attached error message. I did previously have a Teams account for a different company for which I no longer work, but that was a different email account.

Could anyone suggest a solution? The company I work for is stumped.

All the best,

B

Error message reads:

{
"title": "Something went wrong",
"subtitle": "Refresh the page to try again.",
"message": "Error: AADSTS500202: User account '{EmailHidden}' from external identity provider 'live.com' is not supported for API version '2.0'. Microsoft account pass-thru users and guests are not supported by the tenant-independent endpoint.\r\nTrace ID: 7858e38b-ffde-46e9-82fc-44dc0d622b00\r\nCorrelation ID: fc485dcf-a699-4a6a-bc4f-9ac29481427e\r\nTimestamp: 2022-09-26 09:31:47Z {\n "componentStack": "\n in Unknown\n in Unknown\n in jc\n in n"\n}"
}