[2020] How do I check my client version (32-bit or 64-bit) on a Mac?

I tried searching the forums, and this question was asked concerning PCs, but I couldn't find a Mac response. My game is super bugged right now. I can't leave the current map that my characters load to or the game crashes. For example, one character is in Desert Highlands, and any attempt to WP to another map or go through the portal to Crystal Oasis causes a crash. Tech support has been working with me, but a couple weeks on now and we have nothing.

Most recently they asked to make sure I was using 64-bit client, but I don't know how to verify that on a Mac. Anybody know how to check that, and additionally, have any tips on similar issues in game? Thanks for the help guys!