What do you mean by "doesn't count"? Are you not receiving the quest? If you can give us a particular quest that you are unable to earn, we will look into it.
Like right now I am playing "Mighty knight" and none of the quests for the game ever get completed for me. The same thing happened in the games "royal squad" and "royal warfare". I played the games for a long time and never got any of the games quests to add towards my quests completed count.
I have the same problem for about a month as well. All those new games - Dead Detective, Dinogen, Stellar Squad - doesn't recognize me as logged to my account, though certainly I'm logged in. I can see all my previous achievements and completed quests, I cleared cache and even changed password to account, I'm using latest FireFox and flash-player. I heard many people said that there is no such problems with Chrome browser, so I guess the answer is somewhere there,
I had to temporarily switch from Firefox to Chrome for the last two Dead Detective games, though in that case it was apparently an issue with Firefox blocking the wrong cookies and freezing the game (it's explained at the start of the game). And those were the only games I had this problem with. So I assume it's not the same problem, but maybe it does have to do with cookies, and maybe Chrome would be worth a try.
@HahiHa Thank You for quick reply, it looks to me that AG reward system is working fine because I just got credited with "Forum-tastic" for writing 1st time here on forums (after playing here for 6 years, hah!), so it's probably something with my FireFox, though I never did any changes except official update. In my case, I will try Chrome tomorrow and see it it works, not sure if all this info gonna help ghostybarrel though.