The revised RPMS Portal uses a new Authentication protocol. You will need to reset your password in order to access the portal.
On the login screen, simply click the link "Forgot your Password?" or the link below "Password Reset" section. You will be redirected to a page where you need to enter your User Name, then click the "Send Request" button on that page and an email will be sent to the email address associated with your User Name.
If this is your first time to use the RPMS Portal, do the same steps as stated above.