I just bought the Mac client and downloaded the client from here:
"Please Reinstall the Mac Version of FINAL FANTASY XIV"

I start the launcher and log in, then it starts to download updates. It gets about 700megs in and stops with the error:
Code:
FFXIV Launcher Error
Unable to download patch files.
[30413][20496]
Clicking OK closes the launcher, but it won't re-launch because a zombie process is left. The only way I can try again is to open Activity Monitor and kill the process. Sometimes it doesn't leave the zombie process if I wait a while.

I'm using macOS Sierra (ver 10.12.1).

I've tried multiple times in the past few days and it still hasn't worked. My trial days are counting down and I still can't play on this machine!

Any help? Thanks!