Hi, there!
Have you tried looking at this FAQ?
https://forum-en.gw2archive.eu/forum/support/support/MAC-Basic-Beta-Client-Troubleshooting
Here’s an excerpt of the top reasons:
1.) Run software update to ensure all drivers and OS are up to date. (Remember the Mac client requires the latest version of 10.7 or above)
2.) Try repairing disk permissions via Disk Utility first.
(Finder -> Applications -> Utilities -> Disk Utility)
3.) Repair the client install
Open Terminal
Type the following:
/applications/guild\ wars\ 2.app/contents/MacOS/cider —use-dos-cwd C:Gw2 -- C:\\GW2\\GW2.exe -repair
4.)If it doesn’t work, you can try to delete the contents of the gw2 data folder, it’s a pain to get to the right one: this step is a general fix for many tp and graphics issues, even without the previous steps however, it will lose all saved log in/password and in-game settings.
To access this:
1 Click on the “Finder” icon located in your dock or the desktop of your computer to make “Finder” the active program in the finder menu bar.
2 Hold down the “Option” key on your keyboard while clicking “Go” in the finder menu bar. A drop-down will appear.
3 While still holding down the “Option” key, click on “Library” in the “Go” drop-down.
4 Once in the Library folder click on Application Support > Guild Wars 2
5 Move the entire Guild Wars 2 folder to the trash and then empty the trash.
I had this exact problem and in my experience, #4 is the one that usually fixes most problems. #3 doesn’t do anything or it states an error. #1 and #2 are things that don’t make a whole lot of difference. None of it will hurt your computer, so you can try all of them.
Hope that helps.