Hi, sorry to bump an old thread but I have the same problem.
I have the STEAM_CALLBACK in my gameinstance and the SteamAPI_RunCallbacks() in an actor tick. Everything compile, when the steam overlay opens and I click on autorize but my callback function never fire.
I noticed that for the leaderboard example on steam documentation, you had to make a request (SteamUserStats()->FindLeaderboard( “Best Score” );), is there something similar for microtransactions or is this just for CallResults?
Sorry, i’m still pretty confused with Callbacks.