I was able to use it all day yesterday, but today I have the same message you do. Also long loading times at load screens, but the other people in my group didn't have that. I wonder what's going on?
Got it myself today, as well as last night..if only we had some other method of communicating with other players...
Like party chat?
Also, text chat box could also crash.
Party chat only really works with people you know, as i don't know anyone else playing the, adding everyone i meet to psn is not an entirely good idea.
and yes text boxes can crash true, but it's a lot less likely...Never had an issue with text boxes on FF14 on console, or in any pc based mmo.