But now back to the tree counter and why it might be reset: Your browser might be set to delete cookies every time it restarts. If you want to keep it that way, you can check your browser's settings for the option to make an exception for Ecosia.
Have a look at the following links to find easy instructions for each browser
We currently don't have any way of bringing your tree counter back to the number it showed before the cookies were deleted. However, we are working on a tool that may make this possible. As soon as this tool is launched, we will tell you about it on our blog, so stay tuned!
And most importantly: Stay calm and search on. The trees you've helped us finance are of course not deleted, even if your tree count is reset. They are growing and greening the desert as we speak!