Epic isn’t outputting the steam dll to the packaged exe directory anymore. Its also one of the reasons I had to stop having the advanced steam sessions module depend on the steam subsystem in 5.3. For now find the steam dll in the output folders and place it next to the exe. I’m hoping 5.4 fixes the problem, if it doesn’t i’m going to have to change how the steam notifications subsystem works or start loading the dll manually.