Hi, I'm new to the speedrunning community, and I'm having trouble with the live split timer. I tried to link in the obs studios recording Livesplit one and I can't' make it work. please help

Hi guys, I'd like to start speedrun and I'm very excited to do so. I discovered speedrun some years ago and I never tried to do one myself until I bought a game capture card that is going to deliver in a few days. The first game that I want to run is pokepark, one of my favorite games on Wii since I'm a kid. Any advice to make a quality run? Thank you for your attention and get ready for the WR