While I've not experienced anything exactly like what you describe; For a long time the entry boxes were all several inches below where the image implied they were. Essentially if I clicked the Password field it would actually be pulling up username, Password field was where one time PW showed and One time PW was in a blank spot lol. You may want to snap a pic of the issue even if it's off screen with a camera and post it to help. You may also want to recreate this thread in the tech support area which is linked for you below. Hope they figure it out.

http://forum.square-enix.com/ffxiv/f...hnical-Support