Other players in the server cannot read my chat

[Another-Game-Issue]

Thread Title:
Other players are unable to see my chat.

ISP: Cox

Type of Internet Connection: Cable

Internet Connection Speed: 150 mb/s

Date & Time: 09/09/2013 PST 3:30PM

Frequency: Always

Character Name: Demon Fluffy

Race: Lalafell M

World: EU Phoenix

Class/Level: 27GLD

Area and Coordinates: Lower Limsa Inn

Party or Solo: Solo

NPC Name: None

How it occurred:
I had signed out properly a few hours prior to logging in. When I tried to sign on at 1:00pm I was greeted by an error 3102. That would be the ONLY error message I ever received since. I waited and tried again at 3:30pm and was met with success. Everything seemed fine, however, no one was responding to me in /fc chat. Later that night, my brother(who is in the next room), asked why I haven't been talking the whole day. I was already in his party and when I went to check his screen, nothing was there. I experimented until I figured out that people could only read my /say and /shouts. /party, /tell, /yell, /fc, were not showing up on other people's screens. I also confirmed this with my company members in voice chat. There is something else. I am able to use /party chat when I'm in a dungeon. My brother, who is in the same server, can read it as well. As soon as we're out, I'm mute. This has gone on for a long time and hasn't changed through the couple maintenance server reboots.