In the new update today the claypits on the small island got removed. I havent done the math but im pretty sure achieving gold without them is impossible. Im playing without mods and tested this on two different computers.
Here is the island from a savegame of the old version with the 3 clay pits:
And here is the same island after the update today without the claypits(14.1):
I was really excited for todays patch as the update was fixing two bugs with this scenario, one step foreward and two steps back as they say. It is very dissappointing to have to wait for several updates to be able to play the scenario without very easy to detect bugs that reduce the experience.
I havent seen any information about this but does Ubi Mainz offer a community QA program to help to find some of these issues before they get released? I would love to help to make the game better.