@BK747 as mcrudd said, you need the EA app for PC now, as far as I know. I'll add that if it's a Windows PC, be sure to disable OneDrive, since OneDrive and Sims 4 don't work well together. Best thing to do is just uncheck everything to do with cloud storage or OneDrive backup when you set it up. If it's a Mac, I don't think there's anything special to do other than follow what mcrudd said, but I'm not sure since I've never played sims on my MacBook. I'll add that I have installed the sims on my laptop after having it installed on my desktop, and didn't have any problems downloading my packs. Note that I do own some packs and the game itself through Steam though.