now i got it worked. Like above mentioned by HYPNOPHOBIA
dont change anything in room setting except player. I tested with 4 and 1 player, it works- abot 3 k -10 k pro game.
If i uncheck the 3rd person spectate and ghost chat for 4 player like I always did, i get 1 k every game.
If i uncheck the 3rd person spectate and ghost chat for 1 player room , i get 0 k no reward.