Well when i play with my friends they can't see what i'm writin and that really pisses me off please help

Under options, is "chat" enabled? (at the bottom of the 'visuals' box)

Explain step-by-step what you did.

If "chat" is not enabled, i think it would affect all players in the game..? so if hes friends can talk how cant he?

Perhaps they are muting him?

How do you know they don't see what you are writing? Maybe you talk to them and they don't respond? Or maybe they're too busy trying to kill the enemy that they barely have time to see their coorsair?

don't p[ress the / key, use the T chat thingy or tem chat with y or T^