Problem with the chat

Hi all. I'm using firefox and I don't know what key have to run to send the message in the chat. Intro seems like don't work. Some help?

Full screen won't let you have chat

Mac computers are known to have issues with chat. However I haven't experienced it by myself.
Have you tried using other browsers? There is also an 'installed' version.

Yes, i'm using Mac, could it be the problem?

Yes, it could. I am pretty sure that is. I don't know if there are solutions though :/

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