django custom user model password is not being hashed

I have my own custom User model, and its own Manger too.

models:

class MyUser(AbstractBaseUser, PermissionsMixin):
    email = models.EmailField(max_length=255, unique=True)
    first_name = models.CharField(max_length=35)
    last_name = models.CharField(max_length=35)
    username = models.CharField(max_length=70, unique=True)
    date_of_birth = models.DateField()
    is_active = models.BooleanField(default=True)
    is_admin = models.BooleanField(default=False)

    @property
    def is_staff(self):
        return self.is_admin

    def get_full_name(self):
        return ('%s %s') % (self.first_name, self.last_name)

    def get_short_name(self):
        return self.username

    objects = MyUserManager()
    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['first_name', 'last_name', 'username', 'date_of_birth']

manager:

class MyUserManager(BaseUserManager):
    def create_user(self, email, first_name, last_name, username, date_of_birth, password=None, **kwargs):
        if not email:
            raise ValueError('User must have an email address')

        user = self.model(
            email=self.normalize_email(email),
            first_name=first_name,
            last_name=last_name,
            username=username,
            date_of_birth=date_of_birth,
            **kwargs
        )
        user.set_password(self.cleaned_data["password"])
        user.save(using=self._db)
        return user

    def create_superuser(self, email, first_name, last_name, username, date_of_birth, password, **kwargs):
        user = self.create_user(
            email,
            first_name=first_name,
            last_name=last_name,
            username=username,
            date_of_birth=date_of_birth,
            password=password,
            is_superuser=True,
            **kwargs
        )
        user.is_admin = True
        user.save(using=self._db)
        return user

Everything works when creating a new user without any errors. But when I try to login I can't. So I checked the user's password to confirm and the password is displayed as plain text strongpassword, and when changed admin form to get the hashed password using ReadOnlyPasswordHashField I get an error inside the password field, even though I used set_password() for the Manger inside the create_user() function.

Invalid password format or unknown hashing algorithm

However, if I manually do set_password('strongpassword') for that user it is then hashed. Could you please help me solve this problem. Thank you.

It looks like you created a user in a way that does not use your manager's create_user method, for example through the Django admin.

If you create a custom user, you need to define a custom model form and model admin that handles the password properly.

Otherwise, passwords will not hashed when a user is created through the Django admin.

The example in docs for creating a custom users shows how to create the model form and model admin.