Thanks for answer playsgames6666, it is not stupid question. Sometimes we forget to do very simple things. But i checked it, there is a coin image.
Try re adding the image png again and see if that works, don't delete whats there just re add it see if that works.?
Thanks for answer playsgames6666, I solved it. I deleted and add the same thing. While adding, not deleting as you said, nothing happened. Still not sure is it a bug or i am doing something wrong. Anyway, solved it.