Let's remove the warning when you are looknig to speak in uni for the first time... it's very confusing.
Don't remove but rewrite it. The current displayed text is a leftover from times where many people would inhabit this game and language specific channels didn't exist.
Right now, rewriting the warning text to explain that there's channels for each language and how to access them as well as it stating that the general universal channel is mostly for requesting aid and/or information about the game should do the trick.
The warning itself is okay, just heavily outdated with its contents.