Not receiving Matchmaking.Browse2 callback on Oculus go

Hi,
I am working on Matchmaking's browse feature. I am using following code

Matchmaking.Browse2("PoolId").OnComplete(MatchMakingBrowseCallback);

I am receiving a call back in Unity Editor, but I am not receiving any call back when I run the project on Oculus Go. The function "MatchMakingBrowseCallback" is not getting called.
Are there any specials settings that we have to do for Oculus Go?