Indeed, logging in without a problem up to the point of connecting with the data center when "Error 1012" pops up. All my files are up to date - last updated today as was supposed to be; prepared before to all migration business. Size of the game reduced to 32.43 GB. Download status is completed and version is 7.06. Even PS4 system is up to date and runs smoothly. So far so good.
But as someone had noticed - suddenly under "Add-Ons" I find some FFXV content. And in FFXV suddelny sees some of FFXIV Add-Ons. So basically, FFXIV is suddenly all over the place.
Hopefully they fix it soon.