Be sure to install the globalevent, which should be located in your main AAC installation path – gesior-shop-system.lua. There is also version for revscriptsys.
The scripts are located here: https://github.com/slawkens/myaac-plugins-old/tree/master/gesior-shop-system/lua
- gesior-shop-system.lua is for old servers with globalevents.xml, additional line needs to be added there (see comment in the top of that script)
- gesior-shop-system-revscript.lua is for servers with revscript (server that have scripts/ folder with .lua files).