After two attempts I managed to get all the items.
I had a good time on it however I have a few remarks to make:
-the text is not inclusive (the letter "n" where it looks like an "h" and the lack of spacing between words)
-There is a bug when you want to restart the game (the screen freezes)
-we can't move some objects after the end of all levels (see screenshot)
and I found the game a bit too simple: this can compromise the game's life span.
It's still very promising and I can't wait for a final version to be released ^^