Update:
I found and fixed the text error in the configuration file for Island World. It now says "Left Island." The dynmap support is now re-enabled to show the Island borders as well, apparently the recent updating of Island World set it false by default.
I went through the permission file and found that the /afk functionality is set properly. /afk is accessible in all the worlds except for SmallWorld and SkyBlock. Only staff have the ability to enable /afk in either of those worlds. The setting appears deliberate and I don't see a reason to change it. If you see any more miss spelled text lines or wrongful grammar just let me know and I'll find it and change it.