djangoの自作したカスタムユーザーモデルにユーザー情報が保存されない

Question

djangoでUserというカスタムユーザーモデルを作り、djangoの管理画面にもそのカスタムユーザーモデルが適用されているのですが、views.pyのregister関数が呼び出すフォームで送信してもデータベースに保存されません。
どうすれば保存できるようになるか、また、UserCreationFormを継承するとパスワード入力欄が３つ出てきてしまうのですが、２つか１つにする方法も教えていただけると嬉しいです。

###views.py

from django.shortcuts import render, redirect, get_object_or_404
from django.views.generic import CreateView, DeleteView
from django.urls import reverse_lazy
from django.http import HttpResponse
from django.contrib.auth import authenticate, login, logout, get_user_model
from django.contrib.auth.decorators import login_required

User = get_user_model()

from .forms import UserCreateForm
from .models import User


# Create your views here.

def register(request):

    if request.method == 'POST':
        form = UserCreateForm(request.POST)
        if form.is_valid():
            email = form.cleaned_data.get('email')
            password = form.cleaned_data.get('password')
            location = form.cleaned_data.get('location')
            user = User.objects.create_user(email, password, location)
            user.save()
            return redirect('register_comp')
        
            
    return render(request, 'register.html', {'form': UserCreateForm()})

###models.py

from django.db import models
from django.core.mail import send_mail
from django.contrib.auth.models import PermissionsMixin
from django.contrib.auth.base_user import AbstractBaseUser
from django.utils.translation import ugettext_lazy as _
from django.utils import timezone
from django.contrib.auth.base_user import BaseUserManager
  
  
class UserManager(BaseUserManager):
    """ユーザーマネージャー."""
  
    use_in_migrations = True
  
    def _create_user(self, email, password, **extra_fields):
        """Create and save a user with the given username, email, and
        password."""
        if not email:
            raise ValueError('The given email must be set')
        email = self.normalize_email(email)
  
        user = self.model(email=email, **extra_fields)
        user.set_password(password)
        user.save(using=self._db)
        return user
  
    def create_user(self, email, password=None, **extra_fields):
        extra_fields.setdefault('is_staff', False)
        extra_fields.setdefault('is_superuser', False)
        return self._create_user(email, password, **extra_fields)
  
    def create_superuser(self, email, password, **extra_fields):
        extra_fields.setdefault('is_staff', True)
        extra_fields.setdefault('is_superuser', True)
  
        if extra_fields.get('is_staff') is not True:
            raise ValueError('Superuser must have is_staff=True.')
        if extra_fields.get('is_superuser') is not True:
            raise ValueError('Superuser must have is_superuser=True.')
  
        return self._create_user(email, password, **extra_fields)
  
  
LOCATION = (('130010', '東京'), ('230010', '名古屋'), ('270000', '大阪'), ('400010', '福岡'))
class User(AbstractBaseUser, PermissionsMixin):
    """カスタムユーザーモデル."""
  
    email = models.EmailField(_('email address'), unique=True)
    first_name = models.CharField(_('first name'), max_length=30, blank=True)
    last_name = models.CharField(_('last name'), max_length=150, blank=True)
    location = models.CharField(
        '住所',
        max_length = 20,
        choices = LOCATION 
    )
  
    is_staff = models.BooleanField(
        _('staff status'),
        default=False,
        help_text=_(
            'Designates whether the user can log into this admin site.'),
    )
    is_active = models.BooleanField(
        _('active'),
        default=True,
        help_text=_(
            'Designates whether this user should be treated as active. '
            'Unselect this instead of deleting accounts.'
        ),
    )
    date_joined = models.DateTimeField(_('date joined'), default=timezone.now)
  
    objects = UserManager()
  
    EMAIL_FIELD = 'email'
    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = []
  
    class Meta:
        verbose_name = _('user')
        verbose_name_plural = _('users')
  
    def get_full_name(self):
        """Return the first_name plus the last_name, with a space in
        between."""
        full_name = '%s %s' % (self.first_name, self.last_name)
        return full_name.strip()
  
    def get_short_name(self):
        """Return the short name for the user."""
        return self.first_name
  
    def email_user(self, subject, message, from_email=None, **kwargs):
        """Send an email to this user."""
        send_mail(subject, message, from_email, [self.email], **kwargs)

###forms.py

from django import forms
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth import get_user_model
User = get_user_model()



class UserCreateForm(UserCreationForm):
    password = forms.CharField(widget=forms.PasswordInput)
    password1 = forms.CharField(required=False)
    password2 = password1

    class Meta:
        model = User
        fields = ('email', 'password', 'location')

"""
Django settings for weathermailproject project.

Generated by 'django-admin startproject' using Django 2.2.5.

For more information on this file, see
https://docs.djangoproject.com/en/2.2/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/2.2/ref/settings/
"""

import os

# Build paths inside the project like this: os.path.join(BASE_DIR, ...)
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/2.2/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '_3&*rp@a@yxu1_8%w%rw7qh7&^@57#15s6(mbep2(1&!nl8=+h'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'weathermail',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'weathermailproject.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR, 'templates'],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'weathermailproject.wsgi.application'


# Database
# https://docs.djangoproject.com/en/2.2/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db.sqlite3'),
    }
}


# Password validation
# https://docs.djangoproject.com/en/2.2/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/2.2/topics/i18n/

LANGUAGE_CODE = 'ja'

TIME_ZONE = 'Asia/Tokyo'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/2.2/howto/static-files/

STATIC_URL = '/static/'

LOGIN_URL = 'login'

AUTH_USER_MODEL = 'weathermail.User'