Passwords automatically generated by the plugin do not work :(

Hello! This plugin is the best one I have tested for this purpose, it happens that the imports that I have done for this new project are without the password or user_pass column because I want that when importing automatic passwords are generated and sent via email by the plugin itself , it happens that I did some tests and the email is successfully received with all the data, but when using this data for login the system informs that the password for the user is incorrect, what can it be?