My kids cannot create animals in the world

Hi

I've setup a server on a Windows PC and my kids can connect via the iPad/iPhone etc no problem. They cannot create pets / animals. Below is my server.properties.

I am running PE Server v1.1.0.55 and PocketMine-MP version 1.6.2dev "Unleashed" " (API 3.0.0-ALPHA5)

What am I missing?
Thanks

Code:

#Properties Config file
#Thu Jun 8 08:22:57 AEST 2017
server-name=Murdoch
server-port=19132
memory-limit=256M
gamemode=1
force-gamemode=off
max-players=20
spawn-protection=16
white-list=off
enable-query=on
enable-rcon=off
motd=Welcome to Isla's World
announce-player-achievements=on
allow-flight=off
spawn-animals=on
spawn-mobs=on
hardcore=off
pvp=on
difficulty=1
generator-settings=
level-name=world
level-seed=
level-type=DEFAULT
rcon.password=lT47ZUZs8L
auto-save=on
view-distance=8

 

Mobs aren't yet implemented.

 

Thanks for that. I know all the work is volunteer based so I ask this question with humility and respect for those who are putting the effort it. Is it likely to be added anytime soon?

 

If you would like to test out a plugin which adds mobs and attempted AI, I would recommend PureEntitiesX.