Could you try v1.0.1 of *ExtraBold* for macOS? I have hopefully fixed the error with this. If so, I'll roll out updates for all my other plugins.
So this is weird.... When I went to open the zip file from my downloads folder, I got a message from the standard unzipper I use that the file was corrupted and couldn't be opened. it's actually a very similar message to the one I was seeing with your installers previously. I was able to open the zip with a different unzipper and from there, the installer opened for me fine. After rescanning and opening and closing Ableton - can confirm - the AU is there and working - woot! I will check Bitwig later on to confirm if the CLAP is there but seems like everything is working. Stoked to check out your other synths. Thanks for looking into this and fixing it. I actually tried to install one of your synths quite a while back and ran into the same issue but never thought to send you a message that time.