Plugin is not showing up in add-on (Products.FacultyStaffDirectory)

Hi here is my Plone information:
Plone 5.1rc1 (5108)
CMF 2.2.12
Zope 2.13.26
Python 2.7.13 (default, Jul 26 2017, 16:31:12) [GCC 4.3.0]
PIL 1.1.7
I am trying to install this add-on:
Products.FacultyStaffDirectory

It doesn't give me an error or anything in restarting,
Here is my buildout.cfg:

###########################################
#
# Buildout Configuration File for Plone
# -------------------------------------
#
# ALWAYS back up all Plone/Zope data and components
# before changing configuration.
#
# Running "bin/buildout" will update your installation,
# installing missing components as necessary.
#
# This will update the add-on products you've added in the eggs= lines.
# This will not, however, upgrade Plone itself (or anything else you've
# pinned with a version specification). To upgrade Plone itself, see the
# comments in "Plone Component Versions".
#
# Tutorial instructions for using zc.buildout for
# configuration management are available at:
# http://plone.org/documentation/tutorial/buildout
# Full details at http://pypi.python.org/pypi/zc.buildout
#
############################################
[instance]
recipe = plone.recipe.zope2instance



[buildout]
############################################
# Plone Component Versions
# ------------------------
# This version of the Unified Installer has the components of Plone 5
# preloaded so that it can install without an Internet connection.
# If you want to update, uncomment the "http://..." line below,
# edit it to point to the current version URL, comment out the
# "versions.cfg" line and run "bin/buildout" while attached to the
# Internet. Generally, you only want to do that as part of a planned migration.
# Note that if you are updating components, you should also check the versions
# section at the end of this file, since recipes or components other than
# those of Zope and Plone may need updating at the same time.
#


debug-mode = on
extends =
    base.cfg
#    versions.cfg
#    sources.cfg
    http://dist.plone.org/release/5.1-latest/versions.cfg

# If you change your Plone version, you'll also need to update
# the repository link below.
find-links +=
    http://dist.plone.org/release/5.1-latest

# If you try to start Zope as root, it will change user id to run as
# the effective user specified here. This user id must own the var directory
# of your buildout.
effective-user = plone
# This user will own the rest of the installation, and should be used to
# run buildout.
buildout-user = root
# A flag to tell the Unified Installer whether or not to document sudo use.
need-sudo = no

############################################
# Eggs
# ----
# Add an indented line to the eggs section for any Python
# eggs or packages you wish to include in your Plone instance.
#
# Note that versions may be specified here or in the [versions]
# section below. You should always specify versions that you know
# are compatible with the Plone release and at an acceptable
# development level.
#
# If you update to a later version of Plone, remove the hotfix.
#
eggs =
    Plone
    Pillow
    Products.PloneHotfix20160830
    Products.PloneHotfix20161129
    collective.prettydate
    collective.blog
    plonetheme.booster
    Products.FacultyStaffDirectory
    Products.PloneFormGen
    collective.pdfjs
#   collective.embedly
    Products.MasterSelectWidget
    collective.weather
    collective.documentviewer
    webcouturier.dropdownmenu
    collective.contentrules.mailtogroup
    Products.ContentWellPortlets
    Products.PloneSurvey
    collective.searchandreplace
    collective.portlet.twitter
    cs.portlet.calendar
    collective.roster
    collective.workspace
############################################
# ZCML Slugs
# ----------
# Some eggs need ZCML slugs to tell Zope to
# use them. This is increasingly rare.
zcml =
#    plone.reload

############################################
# Development Eggs
# ----------------
# You can use paster to create "development eggs" to
# develop new products/themes. Put these in the src/
# directory.
# You will also need to add the egg names in the
# eggs section above, and may also need to add them
# to the zcml section.
#
# Provide the *paths* to the eggs you are developing here:
develop =
#    src/my.package

############################################
# var Directory
# -------------
# Sets the target directory for the "var" components of the install such as
# database and log files.
#
var-dir=${buildout:directory}/var

############################################
# Backup Directory
# ----------------
# Sets the target directory for the bin/backup and bin/snapshotbackup
# commands. Default is inside this project's var directory, but ideally
# this should be on a separate volume or backup server.
#
backups-dir=${buildout:var-dir}

############################################
# Initial User
# ------------
# This is the user id and password that will be used to create the initial
# user id that will allow you to log in and create a Plone site. This only
# sets the initial password; it will not allow you to change an already
# existing password. If you change the admin password via the web interface,
# the one below will no longer be valid.
# If you find yourself locked out of your Zope/Python installation, you may
# add an emergency user via "bin/plonectl adduser".
user=admin:bitnami

############################################
# Debug Options
# -------------
# Start Zope/Plone instances in "fg" mode to turn on debug mode;
# this will dramatically slow Plone.
#
# Add-on developers should turn deprecation warnings on
deprecation-warnings = off
# change verbose-security to "on" for useful security errors while developing
verbose-security = off
debug-mode = on

############################################
# Parts Specification
#--------------------
# Specifies the components that should be included in the buildout.
# Most are defined in the base.cfg extension; you may add your
# own if you need them at the end of this file.
parts =
    zeoserver
    client1
    backup
    zopepy
    unifiedinstaller

[backup]
recipe = collective.recipe.backup


############################################
# Major Parts
# ----------------------
# These common parts make use of sane base settings from
# base.cfg. To customize a part, just add whatever options
# you need. Read base.cfg for common settings.

[zeoserver]
<= zeoserver_base
recipe = plone.recipe.zeoserver
zeo-address = 127.0.0.1:8100

[client1]
<= client_base
recipe = plone.recipe.zope2instance
zeo-address = ${zeoserver:zeo-address}
http-address = 8081

############################################
# Versions Specification
# ----------------------
# Version information supplied here will "pin" Python packages to a particular
# version number, even when you use the "newest" flag running buildout.
# Specifying versions for all packages is a good idea and can prevent
# accidental changes when you add new packages to your buildout.
# Note that versions specified here will override those specified earlier
# in the configuration, including those from the Plone and Zope version
# config files.
#
[versions]
# Use the setuptools and zc.buildout versions that are
# available in our Python environment.
setuptools =
zc.buildout =

Pillow = 4.2.1

Products.DocFinderTab = 
#Products.PloneHotfix20160830 = 1.3
#Products.PloneHotfix20161129 = 1.2
bobtemplates.plone = 
buildout.sanitycheck = 
collective.checkdocs = 
collective.recipe.backup = 
mr.bob = 
pkginfo = 
plone.recipe.unifiedinstaller = 
requests-toolbelt =
zest.pocompile = 1.4

# Required by:
# Jinja2==2.8
MarkupSafe = 0.23

# Required by:
# clint==0.5.1
args = 0.1.0

# Required by:
# twine==1.8.1
clint = 0.5.1

# Required by:
# zest.releaser==6.8
colorama = 0.3.7

Don't know what the problem is. Everything works well!

did you try to pin the addon version like said on this page:

(unrelated) you should also really pin PIL version to 4.2.1 as explained here:

I missed also that the URL for dist.plone.org is still http; it should be https now!

@gp54321,
Thanks for your help! The plugin showed up by upgrading the Plone 5.1rc1 to 5.1rc2!

Works perfectly!!!