PocketMine-MP installation not completing connections [closed]

I've previously installed Pocketmine on my OS X machine and had no trouble with Minecraft PE clients connecting to it on the local area WiFi and also over the internet.

Yesterday I installed the current version of Pocketmine-MP on a Raspberry PI and also on the same OS X machine that I'd previously had success with. When I run the server, it identifies itself with the version line:

This server is running PocketMine-MP version 1.4.1-980 "絶好(Zekkou)ケーキ(Cake)" (API 1.11.0)

However, in the Minecraft PE server list, neither of these local servers show a green light to the right, where as other servers on the internet do.

When I try to connect to either of these servers from a Minecraft PE client, the connection does manage to "partially" connect. First "Generating World" and "Locating Server" are shown, and then after a couple of seconds, the "Cancel" button is added.

If I hit the "Cancel" button, then I get a line in the server's log:

09:17:07 [INFO] [/80.44.205.83:54232] logged out due to client disconnect

So some kind of connection is being started but not completing.

Also, if I stop the servers, then the connection immediately fails and the client shows an error message.

My player name is "tobi-bobo" (no spaces). I've also tried just "tobi". I noticed that players/ remains empty. No files created for the name I connect with.

These is server.properties in full:

#Properties Config file
#Sun Jun 7 09:19:36 UTC 2015
server-name=LovelyWorld
server-port=19132
memory-limit=512M
gamemode=0
max-players=10
spawn-protection=16
white-list=off
enable-query=on
enable-rcon=off
motd=Welcome to Lovely World!
announce-player-achievements=on
allow-flight=on
spawn-animals=on
spawn-mobs=on
force-gamemode=off
hardcore=off
pvp=off
difficulty=1
generator-settings=
level-name=world
level-seed=
level-type=DEFAULT
rcon.password=bAeyNEzeCt
auto-save=on
debug.level=4

I've tried a few Minecraft PE clients running Minecraft PE 0.11.1: An iPhone 5 and an iPad. They can connect to other servers on the internet no problem, but not my PocketMine installations.

I've tried a direct connection within the LAN, and also by using noip – the results are the same – it doesn't complete the connection, but I do get a disconnect message in the server log.

Here's the full Pocketmine log:

09:08:53 [INFO] Starting Minecraft: PE server version v0.10.5 alpha
09:08:53 [INFO] Loading pocketmine.yml...
09:08:53 [INFO] Loading server properties...
09:08:53 [INFO] Starting Minecraft PE server on 0.0.0.0:19132
09:08:53 [INFO] This server is running PocketMine-MP version 1.4.1-980 "絶好(Zekkou)ケーキ(Cake)" (API 1.11.0)
09:08:53 [INFO] PocketMine-MP is distributed under the LGPL License
09:08:55 [INFO] Preparing level "world"
09:08:56 [INFO] Starting GS4 status listener
09:08:56 [INFO] Setting query port to 19132
09:08:56 [INFO] Query running on 0.0.0.0:19132
09:08:56 [INFO] Default game type: SURVIVAL
09:08:56 [INFO] Done (3.942s)! For help, type "help" or "?"
09:17:07 [INFO] [/80.44.205.83:54232] logged out due to client disconnect