We have released an updated multiplayer version with improvements and Android + Windows export support:
gamemaker3d.com/files/Cyberix3DSetupMulti.exe
In the new version, you can export your game with the multiplayer feature to Android or Windows, but it is only for testing, and you will be disconnected after 2 minutes.
We are working on a multiplayer private server installation.
We will keep you updated.
Regards,
Cyberix3D team