Could be because of this:

http://na.finalfantasyxiv.com/lodest...412d4baaa27ae1

At the following time, Sony Computer Entertainment will be performing maintenance on the “PSN”. During this period, players on the PlayStation® 3 and PlayStation®4 versions will be unable to log into FINAL FANTASY XIV: A Realm Reborn. Please note that players that are already logged in can continue to play as long as they remain logged in.

We apologize for any inconvenience this may cause and thank you for your understanding.

[Date & Time]
Feb. 24, 2015 from 7:00 p.m. to 8:00 p.m. (PST)
PlayStation players might be afraid that they wont be able to get back on like during Christmas.