Can i come to your moderator or something? I have long experience for hacking and ban evading because i was admin on another place and i know what i talking about!! :) Is there any way, i will use it! ;) I wanted to help you!!!
The island level is determined by the value of the blocks you have on your island (A diamond block has a higher value than cobblestone for example) and the challenges you have completed. The level in the chat is your island level, there is no seperate 'player level'. Leveling up your island also increases the chance of getting ores from your cobblestone generator.
Some server lists show the country of where the server is hosted, this might seem confusing to some players, I removed the country from the voting website you mentioned and will look into the other voting websites too.
Besides that, we will add broadcasts to make players aware that the global chat is english only and they can chat privately using /msg or /party. We also always first warn the player before taking action.