Challenges not counting when completed.

So I am not the greatest at this game but I've  been enjoying myself. However, many many times now I've had progress in challenges completely undone by the game either a)recognising I've finished and completed the challenges but not giving me the rewards or b) completely not recognised I've fully completed the challenges. Both instances result in me either restarting the game or having to redo the whole challenge again near enough first time to get it to count. Please can this be looked into as it is frustrating when you 100% the challenge but it doesn't count the rewards resulting in a game restart to get them  or count you actually doing the challenges because of some hidden time limit on certain challenges (I've mainly seen that happen on lines and own the spot challenges).