This is just my personal preference.
In the USA, if something does not fit or detracts from other things we say that it 'Sticks Out Like A Sore Thumb'.
That is the feeling that I get when I look at the new logo.
YoWindow 3 previous logo. Very Nice Logo! YoWindow New Logo. Right now is Sticking out like a Sore Thumb! The old logo has a white 'Yo' on top of a blue square with rounded corners (NIce).
The little YoWindow icon with bright Sun against a landscape has rounded corners.
This did not take away from each other. These worked.
The new one isn't working for me.
The smiling sun is taking away from YoWindow.
YoWindow is what is important.
The Smiling Sun should be secondary.
It should be smaller and have rounded corners.
Like I said, this is just my opinion.

Marty