Loading voices and 'Valid Directory' on Mac. Tw T

I downloaded Synth-V last week, hoping to play around in it during the weekend, but unfortunately iv run into a problem. While trying to load the voices, the program won’t go past the ‘voice installer’ pop up, and if it does, it doesn’t save/go through with loading the voices. Iv searched tutorials on YouTube and reddit but each one seems to get magically fixed and I’m not sure how. I’d try to elaborate more but this is as far as I get each time.