---> Have any other Mac people had trouble contacting and setting up PIA? If so, how did you work around it?

I have PIA installed on my desktop and laptop Macintosh systems. I also have it installed in my Android cell phone and tablet computers (although the Android version is a different piece of software from the Macintosh versions so that might not be a good comparison.)

I must admit I do not have good answers for your questions. I simply downloaded the Macintosh version and the Android version, then clicked on the newly-downloaded files and followed the on-screen instructions. Installations only required a few seconds each and worked perfectly. Therefore, I have never had any reason to contact PIA Support. I have simply used the VPN all day, every day, without any problems.

I just went to the company's web site right now and noticed that PIA Support is at https://www.privateinternetaccess.com/helpdesk/ although I haven't contacted them for any reason. Therefore, I don't know if that is a working address or not but you might give it a try.