You might need to re-install. Make sure you follow the steps carefully and run the migration. The reason that I say this is that you mentioned that your password field is empty, however, unless I am mistaken, there is no field named password in the advanced template. Anyway, you should follow the steps in the guide precisely. The data structure needs to be exact for it to work properly.
The password gets saved in the password_hash field. When you set up the advanced template, you need to make sure run the init as per the instructions. then Create the database, and this is just creating a DB with no tables, configure your connection to the DB, then run the migration. The migration creates the user table for you. It follows an exact datastructure, which you must follow to get started.
The user signup process works complete out of the box, so if it does not work, most likely, you have not installed it correctly.
Faced the same problem. For advanced template default signup scenario - activate your account by email confirmation. Until that moment you user status is inactive. This status is used for login - only active users can log in.
If you don’t have email server and use this project for local purposes, you may change the status of your user in db from 9(inactive) to 10(active). Then your user will be found and you may log in with your password.