There needs to be a support system or a way to get some sort of support. I asked tonight what the best way to get in touch with someone in the chat and it goes silent like you didn't say a word.
If you just entered the game and no one is on the same island as you started on, then no one can see your chat yet, when people show up in the chatlist as yelllow dots(you or they talk when your on the same island), or green dots(if they added you as a friend) then they should be able to see your chat after that.