How do you log OUT of Android Google Play in Game?

I have correctly setup my google play services, logging IN and leaderboard write and leaderboard show table functionality within my game with shipping builds deployed to internal testers in the game store, but I cannot log OUT on a log out button click. I use the Logout blueprint node (Target is logout callback proxy) but it doesn’t work under ANY/ALL circumstances. In other words, I cannot get the On Success path to fire on the Logout node. I attempt my Logout node within my game instance blueprint where my player controller is surely setup and working so I don’t think its a player controller related issue.

Can anyone please tell me how to simply log out of google play within my unreal android game? Again, all my ID’s configurations and settings are completely correct as I have other existing functionality working as mentioned above. This is simply a matter of logging out a player!