Hey hey! I'm really sorry to hear that you're having issues opening the game >.<
Unfortunately, I'm not going to be able to be of much help :( I have never owned a Mac myself, so I don't really have any idea how they work. My boyfriend has a macbook for his work, so before I released the game, we tested it on his work macbook and it was all fine, but I have no idea what version his is or how old it is and stuff (I don't think it's particularly new though.) I can ask him, but I probably won't get a reply very quickly cos I'm at my dad's at the moment and my boyfriend doesn't respond to my messages much when I'm away xD
You're not the only person to have this issue though! I posted about it on the Tyrano support forums a while back when I was first told by someone using a mac that they couldn't get it to run on their device. The Tyrano devs themselves never got back to my support request >.< but other Tyrano users gave a few suggestions which I posted here. However, there's not much there to try, and you said you've looked at the document, which I think contains mostly the same info, so sadly, there's not much else I can suggest :(
It must be something to do with the way the game is packaged, but I don't know a whole lot about coding and stuff (which is why I chose to use Tyrano in the first place, haha.) The Tyrano devs haven't really given people who asked about it much in the way of help or answers to fix the issue. They sort of just concluded that it works for some people and not for others, then just left things at that >.< The following is a quote from one of the Tyrano (devs? not sure exactly who they are, but they're related in some official sort of capacity) people in response to a user support request:
'See if they are running mac or linux versions... they tend to have a love/hate relationship with nw.js and will sometimes work and sometimes not, just have them reboot their system and try again.'
That sorta suggests that they know there are issues there in general, but don't really know how to fix them for individual users. I guess it's probably very difficult to troubleshoot, and if I was a techy person, or had a studio with savvy people to turn to for advice, I might stand a chance of getting to the bottom of the issue, but as it is, I seem to be buggered T_T I will have to try and get a browser version of the game functioning at some point, so that those who can't launch it as a downloadable game will have an alternative option.
As a solo dev, it's very frustrating, because I put a hell of a lot of time and effort into the game, and then when I hear it doesn't work for some people who want to play it, and there's nothing I can do about it, it really sucks :( I'm sorry that there's not more I can do to help you. The Tyrano devs are well aware that there are issues with exporting games made using their software to Mac, but they just don't seem to be bothered about finding fixes for it. My support request was just sorta left hanging with no definite fix that works for everyone >.<
I know that's probably not the answer you were hoping for, but I really appreciate your interest in the game, and I'm sorry you aren't able to play it :( I hope that you have a lovely week + are managing to stay safe! :3