Log in at portal.epassi.nl with your email address. You will receive a login code by email. Only employees with admin rights can log in. If your organisation uses Microsoft or Google login, choose that option.
After 30 days the portal asks for a new code. If your organisation has enabled extra security (MFA), you also confirm the login in your authenticator app.
Can't log in even though you are an admin? Ask a colleague who can manage permissions to check your access (see Managing permissions in the Manager Portal). Is nobody left with those permissions, for example because the admin has left? Email manager-support@epassi.nl.