This is the message in your email
Congratulation, XXXX, 
Ghana Statistical Service (GSS) acknowledges your application as a Field Officer in the impending 2020 Population and Housing Census (PHC). You are, however, required to create a new password and login to the application portal and make sure all the mandatory fields are completed by updating your application information for the final stage of shortlisting qualified applicants.Find Your Details Below
Your Username: xxx
Your Password: 
Your PIN: xxx
Your Serial: xxx
Kindly use the instructions below to create the new password. Please, screenshots are provided after the instructions for your guidance.INSTRUCTIONS
Click the Create Password button below after which a prompt screen appears for you to enter a new password and confirm the password. After confirming your password, you will be redirected to the login page. At the login page, provide your Username and Password and click the Login button to access your portal.Username: [Your email address of the application]
Password: [The new password created]

Once you are in the portal, perform the following;
1. Update every information required. For example, Region of residence, District, City/Town, Suburb, preferred choice of District and locality, upload passport picture of not older than three (3) months and others. Failing to do this will make your application incomplete.
2.After updating the required information, review and ensure the information has reflected. 
3. Finally, click the Confirm button to submit your updated information and wait patiently for your confirmation.SCREENSHOTS GUIDELINES
STEP 1: Click the Create Password button