you have to zip all the files in /client subfolder of the wazapp.zip downloaded from the github... so: /client FOLDER and all its subfolders, keeping the (sub)folders structure. after that delete 2 files from that zip - wazapp and wazapp_init... then copy that zip into /opt/waxmppplugin/bin/wazapp FOLDER and extract it there... You'll be prompted if You wanted to overwrite the files with the same names or not - choose overwrite for all...