Hedgemont - For the Birds

I have been stuck on the for the birds mission in skate for over a fortnight due to a glitch. I am rapidly losing motivation to keep playing the game because of it. I have submitted a report through the game at least 3 times. I left feedback in the S1 poll. No feedback and no update to fix this. 

When I first played the mission the bird poo appeared and I did the grind to remove them all. They are no longer there or visible. The tracker in the game shows that 3 are remaining (4/7) and the mission is not competed. I have been stuck here for at least 2 weeks. There has been a game update / server down for maintenance in this time. 

When will this be fixed?