Fightcade installation help on mac


Hello everyone, my friend is having trouble installing fightcade on her laptop. She is using a mac book (not sure which version) and she is able to download the game but as soon as she opens it to install the installer doesn’t even pop up. It only pops up on her task bar and immediately disappears. She doesn’t have a firewall and it’s also a european laptop if that matters. we also tried re downloading the installer and restarting her laptop. Is there any way to fix this?