H2O when you get to the tree the things at the bottom of the screen light up you have to click on one or two of them to move on. Keep your one that is worth 1000 until you get to the egg. You need the 1000 point one to get the egg. Hope this helps. Hard to explain when you can't see the screen.
I can't reach the top of the screen either. I have lost more time because of this and never get anywhere. The only time you can get them is if you have the hammer hint at the bottom which costs you too much to get.
I am having the same problem being able to click on certain objects, then you can never finish your search. I have had that happen 12 tmes today. It really sucks.
 "Rooms of Memory"){kind=icon}