has anyone seen this before? https://archive.org/details/@andrew_gardikis I think this might be the legendary SMB1 speedrunner AndrewG. what do you think?

I recently downloaded LiveSplit, but I can't use the timer. so I go to downloads, then LiveSplit-1, then LiveSplit.exe. but when I click it, it does not do anything! even when I click open! is livesplit.exe the file for the timer? is this a computer bug? I use macOS. someone please tell me. I don't know what to do.