Sounds like a server problem that was solved a long time ago.

When you play other games, do you experience it too? If you do, then it's something on your end. Try to reset your router, and/or modem and see if that solves anything.

If not, then it's better to contact support here:

https://support.na.square-enix.com/c...p?id=5382&la=1

Hope this helps a little.