I have the same problem. For me the picture is very blur. I'm not wearing glasses. When I keep it 10-15 cm away, the picture gets sharp.
On the other hand, for my wife and kids it's relatively sharp. So, ... problem with my eyes?
Hmm....good/important feedback. Many thanks.
So for your wife it`s sharp but for you it`s blur. Seems to be something with my eyes so.
In the meantime I´ve fixed the issue a bit. I´ve cutted out the plastic lense and placed it on the other side to the box so that I´m directly looking in the lenses, then the black box is coming and then the mobile....or in other words: I´ve shifted the lense up to 10cm moving to my direction and glued it via transperent tape. This fix made the picture sharper for me.