How to run pybm?

Question

Django

Installed pybm. I did everything as stated in the instruction https://pybbm.readthedocs.io/en/latest/install.html
But when visiting this url (r'^forum/', include('pybb.urls', namespace='pybb' )), the main page of my site is shown and that's it. No module work. Although there were no errors and I installed all the necessary modules for work. Here are the settings:

# -*- coding: utf-8 -*-

import os

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))

DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    #'django.contrib.sites',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'contents',
    'user',
    'pybb',
]

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

ROOT_URLCONF = 'mysite.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [os.path.join(BASE_DIR, 'templates'),
                 os.path.join(BASE_DIR, 'contents/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',
                'pybb.context_processors.processor',
            ],
        },
    },
]

WSGI_APPLICATION = 'mysite.wsgi.application'


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',
    },
]

CACHES = {
  'default': {
    'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
  }
}

LANGUAGE_CODE = 'ru-RU'

TIME_ZONE = 'Europe/Moscow'

USE_I18N = True

USE_L10N = True

USE_TZ = True

MEDIA_ROOT = os.path.join(BASE_DIR, 'files', 'media')
MEDIA_URL = '/media/'

STATIC_ROOT = os.path.join(BASE_DIR, 'files', 'static')
STATIC_URL = '/static/'

STATICFILES_FINDERS = (
    'django.contrib.staticfiles.finders.FileSystemFinder',
    'django.contrib.staticfiles.finders.AppDirectoriesFinder',
)
ADMIN_MEDIA_PREFIX = '/static/admin/'

STATICFILES_DIRS = (
    os.path.join(BASE_DIR, 'static'),

)

LOGIN_URL = r"/login/"
AUTH_USER_MODEL = 'user.User'

urls.py

from django.conf.urls import include, url, patterns
from django.contrib import admin


urlpatterns = [
    url(r'^admin/', include(admin.site.urls)),
    url(r'^', include('user.urls')),
    url(r'^', include('contents.urls', namespace="contents")),
    url(r'^forum/', include('pybb.urls', namespace='pybb')),
]