Voice Servers
Teamspeak Gadget Issue
Try adding these permissions: http://guildlaunch.uservoice.com/knowledgebase/articles/437834-why-won-t-the-ts3-widget-show-my-ts3-server-inform
Sorry I should've mentioned that I found that link in another post and have already confirmed that those settings you linked to are enabled. I should also mention that this was working up until (now) three days ago. Occasionally we would see this error then it would clear on it's own. Now not so much. 
Sorry for the confusion! I found out shortly that our server techs had to temporarily disable query ports on our TS3 servers while they research a potential exploit - they're actively working on it and it should be resolved in the near future.