Thanks for your email. Our technical team has had a look at your case and recommended the following discussion links: https://linuxconfig.org/how-to-install-skype-on-ubuntu-16-04-xenial-xerus-linux-64-bit https://blog.teststation.org/ubuntu/2016/05/12/installing-32-bit-software-on-ubuntu-16.04
We feel the first link which talks about manually installing i386 package on a 64bit system can guide you better.
Please let us know if you require further assistance.
This allowed me to run the desktop app, but this doesn't seem to be everything that is missing: when running colwizdesktop from terminal, I still see some error messages:
Gtk-Message: Failed to load module "overlay-scrollbar" Gtk-Message: Failed to load module "atk-bridge" Gtk-Message: Failed to load module "unity-gtk-module" [20214:0530/124047:ERROR:gl_implementation_osmesa.cc(22)] Failed to load libGL.so.1: libGL.so.1: cannot open shared object file: No such file or directory