Thank you for your feedback. About the collided, I used a polygon one, but there's a small chance that you moved your mouse while clicking and then it got detected as dragging the camera.
The tiles were small because I forgot to set the canvas to screen size and it was fixed.
On the Ecology, I understand that it's hard to note the difference so I'll take care of it.
And I am fully aware that the game is not balanced, will see if I get back to it what I can do