So you're trying to load up the new Genshin-esque RPG, Wuthering Waves, on Epic Games but it's not launching for some reason—it wouldn't be the first time I've had trouble navigating the Epic app. First off, it's worth noting that you can simply download Wuthering Waves directly from Kuro Games by following the link there and clicking the Windows icon.
This will let you access the launcher in a far simpler way so you can start preloading the game. However, if you'd prefer to install it through Epic for whatever reason...