What is my PeopleImport username and password?
Login to PeopleImport is done using your Salesforce username and password, and possibly a Salesforce security token if your Salesforce instance requires one for accessing the Salesforce API.
The login name will determine the database you are connecting to and will also ensure that you have the proper administrative rights on that database.
NOTE: Password resets will need to be done in Salesforce. Validity will never know or be able to supply you with your password or token information.