Problem signing into database after user changes email address in Zoho account.

Problem signing into database after user changes email address in Zoho account.

Hello,
I am the administrator for a database. One of the users changed their login account to a different email address:
Now they are getting an error message when trying to log into the database:
The error message is: "You have logged in as adminvs1. You are not allowed to access this application.  ..... Please click here to login as a different user."
I had already changed the usrer's email address/login to the new email address the user has changed to.
The user is able to log into her Zoho account with no issues, but attempting to log into the database she is getting the above error message.

If anyone has any help in resolving this issue, I would very much appreciate it.
Thanks
Yogi