Why aren't my plugins working after the package?

Hi,
I’m creating a new little game and I decided to add the DiscordRPC plugin and the Advanced Sessions Steam plugin. Both of them are perfectly working on the Editor, but when I package the project, none of them work… I mean, the game launches perfectly, but I don’t have the Steam overlay, and Discord doesn’t show that I’m playing too, so I guess that the plugins are not working… They are packaged, I can find them in the folders…

I didn’t find anything that could actually help me. So that’s why I am here.

Thank you

little up because I still haven’t found an answer