I predicted myself the servers won't be able to handle the load. Never even complained once on day 1 because this is not the first time I see hiccups from xpac launches. Square Enix got jumped by massive increase of players a few months ago. Shortage made it harder for upgrades. I know some things are out of their control.

I just look for workarounds. Beat the queue by queueing early when I work from home. When I'm in office, I used remote desktop to queue estimating when I'll be back home vs the queue.

Eventually, they'll fix the issues. It takes time.