Are you an indie game dev who made a custom engine? Are you thinking of putting your game on the Epic Game Store and add the EOS #SDK to your engine?
I have some advice for you. Don't. DON'T. Run and don't look back.
It's the most ridiculously and unnecessarily convoluted system I have ever seen. Every time you think you figured it out it hits you with another step that doesn't make sense.
Save yourself.