I'm very disappointed with silhouette America customer service, they simply Don't reply, I sent 4 emails but no reply so far. I bought business version of studio 3 software n I was using on my 2 devices I sold one device( n deactivated the license key) n now want to use it on my new Mac but I'm unable to cus it keeps on saying u already been using on more thn one device. I've been asking for their support but it's been a week no reply from them I'm really DISAPPOINTED