Solve Skype 32bit connection issues on 64bit

I'm not sure if it's related, but when installing the 32-bit version of Skype on my 16.04LTS 64-bit system, Skype, which is only available in 32-bit, did not retrieve my ongoing conversations. Even worse! The discussion groups were invisible, and I couldn't see the messages being sent to me (I could hear the notifications on Skype phone, but not on desktop).

To fix this, I found an interesting page that helped me out with two commands:
https://community.skype.com/t5/Linux/Skype-group-chat-not-working-anymore/td-p/3987288

The following command told me I was offline, even though I was clearly online.

/dumpmsnp 

As a result, the command below, which should have given me my connection location, returned nothing.

/showplaces 

It's this magic command that fixed it for me:

/msnp24 

After restarting Skype, I was able to retrieve all the groups, as well as the conversation histories.

To join a group call that is not initiated by a Linux instance, it seems that the following command works (in place of the "join" button)

/golive 

To automatically log out other devices except for your connection:

/remotelogout

The list of commands can be found here:
https://support.skype.com/en/faq/FA10042/what-are-chat-commands-and-roles

You can also fix issues with Skype modules not loading by installing the following packages:

tbourdin@tbourdin-ubuntu:~$ skype
Gtk-Message: Failed to load module "overlay-scrollbar"
Gtk-Message: Failed to load module "gail"
Gtk-Message: Failed to load module "atk-bridge"
Gtk-Message: Failed to load module "unity-gtk-module"
Gtk-Message: Failed to load module "canberra-gtk-module"
sudo dpkg --add-architecture i386 ; sudo apt-get update; sudo apt-get -f install
sudo apt-get install libatk-adaptor:i386 libgail-common:i386 libatk-bridge2.0-0:i386 libatspi2.0-0:i386 libgail18:i386 libgtkmm-2.4-1v5:i386 gtk2-engines:i386 libcanberra-gtk-module:i386
sudo apt-get download overlay-scrollbar-gtk2:i386 ; sudo dpkg --force-depends -i overlay-scrollbar-gtk2_*_i386.deb
ou bien :
sudo apt-get download overlay-scrollbar-gtk2:i386 ; sudo dpkg --ignore-depends overlay-scrollbar -i overlay-scrollbar-gtk2*.deb

EDIT:
To fix sound issues with Skype alpha, simply modify the pulse-audio settings

sudo gedit /usr/share/pulseaudio/alsa-mixer/paths/analog-input.conf.common

[Option Auto Gain Control:on]
name = input-agc-on

to

[Option Auto Gain Control:on]
name = input-agc-off

and

[Option Capture Boost:on]
name = input-boost-on

to

[Option Capture Boost:on]
name = input-boost-off