In update 1.2.2, the previous "no boat" marker is replaced by a "maybe boat" marker.
We recommend using it to mark where boats could be, rather than where they can't. This leads to using way less markers and is more intuitive to the eye.
Note, however, that the this is just a recommendation, you can continue using the marker however you like, as it is just a helper for you to solve the puzzle.
Other than that, we have fixed some issues that caused the leaderboards to fail to update today. Unfortunately, if you already played the daily, it won't upload your result again today, but your streak and monthly challenge are safe!
Stay hydrated,
Liquidum team