Completely remove the z-way-server from your Raspberry Pi

0. Be root

1. Kill the z-way-server processes

kill -s 9 ... (PID of the process)

2. Remove all dirs with z-way-server files

rm -rf /etc/zbw* && rm -rf /etc/*/zbw* && \
rm -rf /etc/*/z-way* && rm -rf /opt/z-way-server/* && rm -rf /etc/z-way* && \
rm -rf /etc/rc*.d/*z-way-server && rm -rf /opt/z-way-server && \
rm -rf /run/z-way-server.pid && rm -rf /run/systemd/*/z-way-server.service && \
rm -rf /var/webif/lib/*_z-way* && rm -rf /var/log/z-way-server.log && \
rm -rf /var/webif/lib/._set_z-way* && rm -rf /var/webif/lib/._get_z-way*

3. Reboot