You need to reset the default password using the database tools. The following value below corresponds to the "password" password:
5f4db43b5ad965aa1dfd27a2c8feb1e7
You need to change the Password column in the DefaultBusinessSpaceName_RegularUser table of the BASDB database:
UPDATE DefaultBusinessSpaceName_RegularUser WHERE Password='5f4db43b5ad965aa1dfd27a2c8feb1e7'
where DefaultBusinessSpaceName is the name of your default business space.