Documentation request:
no where is it obvious how to run multiple masternodes on a single VPS

the only solution I have found is to run
sudo ./install.sh -p xios -c 3 -n 4

and then manually edit the /etc/masternodes/xios_n1..3.conf file for each node and run each on a different port and add these ports to the firewall rules

then bootstrap each folder /var/lib/masternodes/xios1..3

is

The download instructions, which people usually just copy and paste, points to v1.3.0 but v1.4.0 is the current/latest release since 7 months ago. It would also be better to improve the command given here to fetch from "latest" rather than hard-code the version in the Readme, although I realise that github don't currently make this easy.

After running procsd create the services were not starting and I was receiving:

/bin/bash: -c: option requires an argument

It turns out that an argument is missing after the service file is generated. An exec should be added:

ExecStart=/bin/bash -lc 'exec $BINDIR/gunicorn app.wsgi --log-file=- -b 127.0.0.1:$PORT --log-level DEBUG'

It also the same in Foreman. procsd does no