Chroloform

Hello. I've played for a number of hour on ranked these past few years, but had to format the pc a few months back and never got back, today i ended up installing it in on a mac (previously i played on pc) and when the game opened all my characters had vanished. Is there any way they can be recovered? my steam id is: https://steamcommunity.com/profiles/76561198088748496/