I would like to know what went wrong here. I'm learning with tutorials and it seems I did something different.
When I started sculpting it appeared that there is a gap without texture around the top. I do not have the gap problem on the second picture because there are the 2 holes missing on the upper side. For the holes I did it with separate loop cuts and then extruded and again some loop cuts for smoothing the edges.
But why do I have the gap? Can anyone tell me what I did wrong?