@rellietay - Afraid there isn't much point in addressing your issue to "someone" who might have other ideas. @puzzlezaddict and Bluebellflora are the pinnacle of TS3 for Mac support (among other geat things). The rest of us, including us Mac users, watch in awe as they help players get through these things. I am certain that puzzlez will be able to resume assisting and help you find the missing part to that process.
But there is something that I don't think has been mentioned here yet. The experience you are chasing down might be a bit disappointing. TS3 for Mac once you get it going properly is limited to 2 GB of RAM no matter how much is installed, unlike its Windows counterpart that can address almost twice that. There is no way to fix that. When we start talking about all or most EPs being in play, that restriction is very limiting and crashes or Error 12s upon trying to save typically become the order of the day unless you don't intend your ongoing games to progerss very far. This is why so many of us on Macs use Bootcamp to run the Windows version of the game instead. I had all sorts of reasons for Bootcamping mine anyway at one point, though now most of them have melted away and I keep this thing in place strictly for TS3. When I purchase a new iMac later this year, I will end up doing the same thing.
It might also be worth mentioning that by all accounts, Mojave (OS 10.14) is likely the last Mac OS that TS3 will run on at all given that Apple is dropping all support for 32-bit applications. It wasn't even supposed to be able to run on Mojave, but Apple extended the ultimatum a bit.
But again, it shouldn't be totally impossible to get the Mac version going on your end. Just very challenging.
