I've been playing for more than a year, every day (on level 1360), and not once has a Treasure Mill Event ever come up for me at all. And yes, I update the game regularly. :-) Wonder if it'll ever appear?
Hello @MmeX, Hearty Welcome to the Farm Heroes section of our friendly King Community
At first, the Treasure Mill Event was available for selected players as a Test feature. But, due to some technical reasons, Treasure Mill is taking a break right now!! Not sure when it will appear again though!! Hopefully soon enough!!
Hope this clarifies! Have a wonderful day/evening!
As you can see, the topic was started in July 2018 and I confirmed that the issue was fixed in August 2019. If this was a problem that caused the app to crash or other issues, then it would be considered a priority by the team and they would look at it very quickly. The issue in the topic that I linked was not considered a priority, so it went to the back of the queue. So even if the Treasure Mill events were permanently removed, then it could be a long wait until the team gets around to it.