Great tool thanks, however I have a little issue. I can write leaderboard score, but I can not get/ list any leaderboard scores. First I init leaderborad and "Is Steam ready to return leader board data?" returns true, but when I call "Request leaderboard" node it always returns false, "Is Steam data ready for me?" node does the same. Do you have any idea what I do uncorrectly, or what can go wrong?   

Are you testing with a standalone play mode?
Playing in Unreal Engine itself will fail to init Steam, which is why the Request leaderboard call returns false.

Thanks for your response. Yes I've tried in standalone mode,  achivements unlock correctly, stat update works fine. I checked again and "Request leaderboard" node returns true, the "Get leaderboard data from leaderboard" node what always returns fail.

I've found the solution, I had to wait because of async calls.