Your credentials expire after 30 days if there has been no activity on the application.
To receive new user credentials select the "New user for existing application? Register Here!".
Then enter the Applicant Company ID that was provided in the email when your company was first credentialed.
You will need to talk to the person within your organization that set-up your company to gain access to the email.
The FHA Online Lender Approval Application is available on the How to Become an FHA-Approved Lender web page at https://www.hud.gov/program_offices/housing/sfh/lender/lendappr
HUD Policy Determination