Not posting this for myself, but my girlfriend has been unable to play the game on MacOS ever since Flash died. I have looked around on the forum for solutions in case any that worked for us had already been posted but so far there has been nothing.

Suggested solutions we have tried so far:

Flash Center Browser & CN Flash Player

Both seem to be region-locked and not usable outside of China.

Puffin

I wouldn't recommend anyone try this ever, its too slow even on PC/Mac and overall a horrible experience.

Maxthon5

I have personally tested this browser on my own MacBook and it seems to be working fine BUT it only works because I never previously uninstalled my Flash Player. The reply to this post suggests that in order to use this browser you should uninstall your current version of Flash Player and install an ulterior one however the Flash Player provided in the first post is region-locked and will not work:

Not sure what to try at this point since the Flash Player has already been uninstalled from the device. I saw there have been posts stating that there's development for a mac client however without a release date it would be ideal to have a functional solution until then. Is there any way to get Flash Player back or does anyone have another solution that works?