dumb question - how to chat
 

i know that it is a dumb question but i can't do it as when i try to chat it is said that what i wrote was an unrecognized command so can u give me please the key?

You have to hit "T" to chat with everyone... and "Y" to team chat. Check to make sure they are bound to those keys though. It sounds like you are just hitting TAB to talk.

it still says unrecognized command

man i need this as ma teammates are still throwing grenadens when i'm already in enemy territory and i want them to stop