Board Thread:Support Requests - Getting Technical/@comment-28694993-20160803040534/@comment-26843745-20160803081451

You can change it by editing system messages,  (it is for text in chat button when there is someone in chat) and   (this one is for text in chat button when there is nobody in chat). However, both of them are not whitelisted as of yet, so you will have to ask Wikia Staff to change them for you.