This hook uses the Pheonix API , its probably the API not working with the 1.7.x query. As long as your query ports are enabled and firewall open, check directly with the API and get in contact with the API Author if it doesn't work.
Also, the current 1.7 version of Spigot has query issues.
MCPE server uses the same query as normal minecraft. Enable query in the server.properties and set the query port to the same as the join port. There shouldn't be any reason that Pheonix API won't work with MCPE.
Take a look here: https://github.com/PocketMine/PocketMine-MP/wiki/server-properties
For anyone that can't retrieve player images, make sure that the Query port is the same as the join port (Minecraft default is 25565). And make sure that port forwarding (UDP for query and TCP for join) is setup.
I uninstalled the shoutbox about a year ago and decided to come back to it. It mustn't have uninstalled properly as the ACP wants me to upgrade. It errors as soon as the upgrade process starts as certain tables don't exist.
Are there just a couple of tables I can drop in SQL so I can do a clean installation?