When EV sends email notifications such as "Your role has changed" it does not take into account if the recipient address has an account in multiple institutions/tenants. This is important because when the user clicks the "Take Me There" button the user must select an institution/tenant as part of the auth process.

I suggest adding the institution/tenant to the notification text. For example, change "You have been granted the following role(s): <ROLE>" to the following...

"You You have been granted the following role(s): <ROLE> in <TENANT/INSTITUTION>"

Another option would be to pre-populate the Institution in the URL associated with the "Take Me There" button in the notification.