Can I run a DLC I purchased from Epic Games via Origin?

@hottiemess  Are you asking about the Origin app, which doesn't run in Windows at all anymore and is only available for Macs running an older OS?  If so, then no, specifically because Epic-bought DLC isn't supposed to be available in macOS.  If you have a Windows PC and are in fact using the EA App, then yes, your Epic-owned content should show up in your EA App library after you've launched Sims 4 through Epic one time.