invalid credentials extended error

I can´t configure or login my john iezzi at iezzinformatica dot com dot ar account outside Microsoft Edge (Canary) using Urban VPN add-on configured on U.S.A.

Almost all of my iezzinformatica dot com dot ar accounts were added for imports (beside of setting forward) in my main Google Workspace IEZZIMATICA dot com dot ar account.

Didn't know that Google uses a lot of IP address from various places in the world (discovered in my iezzinformatica dot com dot ar logs account).

Now Im trying to reunite all e-mail in just one iezzinformatica dot com dot ar account (the one I use for Windows 11 Canary) in order to subscribe the cheapest professional MS 365 Professional Service, with all my actual accounts and aliases.

But if I dont solve the problem of reuniting all my mail in just one account Im pretty stuck. I have no longer access to an admin panel coz  it's a legacy Service (an old Windows Live Domain, it seems to me, that Works only thanks to MX still alive).

What can I do?

Im not even allowed to add that account to MS Authenticator.