Just follow Ubuntu or other linux mining tutorial, terminal is the same and compiled binaries work also in Mac. I assume you are using tutorials for solo mining, that is useless right now. Search for a pool mining tutorial of your favorite currency and start minting
:-/ It is sad to read this. But who knows, maybe they run a ponzi scheme, maybe an accountant worker of them stole coins or maybe they are been blackmailed by russian hackers, who knows.... Glad to know some of you have your coins back