Can't login into Admin Console

[Alex-Admin]

We got approved for Google for Nonprofits.

We are trying to set up Google Workspace for Nonprofits.

I'm an Admin and can't log into https://admin.google.com/

All I get is a notification:
"Sign in with an administrator account
To sign in to admin.google.com, use an administrator account for a managed Google service, such as Google Workspace or Cloud Identity."

 

But I'm an Admin. How to log in???

[StephenHind]

@Alex-Admin you need to sign in with the new email address you specified as the admin account.  You cannot use an account that's not part of the domain you signed up for Google Workspace