Latest questions about "fidelity active trader pro"

Hi , wondering that your product use the Meta Trader 4 or MT5 to felicitate the charting , buys and sell orders etc.

The newest version locks up during installation. The next older loaded and when it started, asked if I wanted the update for that version. I said yes and the new one wont load.

Also mention if the software is only for windows or if Mac versions are also available. So far all the other 'suggested' sw was only for windows when I was downloading it.