Well I was thinking that maybe the game needs to be distributed somehow on a platform before you can interact with your actual friends list by having a Merchant account or atleast uploaded somewhere to have the same version. But I cannot verify any of those theories since I gave up on the EOS overlay. I simply did not figure out what the solution to that was and It was taking too much time to go through the plugin. I could create my own button and it works perfectly and the overlay is simply an illusion of the product, since the buttons there only produce errors when in reality a button should only be visible when it works. The purpose of buttons is to have a function and an indicator.
For developers it’s a headache for the documentation only define what an external account type is, but not how and where one would set it. Maybe there was somewhere, but I was too blind.