User blog comment:OreoV2/New Bug?/@comment-25404524-20200126224454

I'm not sure if it is a bug, but rather as a new feature. I personally dislike the change whereby deeper Monkey Knowledge costs Monkey Money, but it's part of a balance change that Ninja Kiwi decided to make. It's just as controversial as numerous other mobile games could potentially do, but unfortunately sometimes one has to live with these changes.

If by "lost my saved 2832$" you meant that you spent all your Monkey Money because of the new balance change, it's a something where you may need to grind a bit more Monkey Money. If by that same phrase you meant that you suddenly lost it out of your control, by save corruption or something like that, do call the Ninja Kiwi team because that may be an actual bug.