Problem with the rendering

Help me please.It`s keeps getting stuck on the frame buffer and won`t clear.Apparently I messed up some settings and now it just stays on my visualization.

Are you able to go to Image/Clear Image?

Yes, of course.

I removed the photo but I have another problem related to deleting these layers, and at the moment it can neither be turned on nor deleted
Lens effects and Sharpen/Blur.

You can’t delete them, but you have to enable them in each layer as the affect render times slightly.

You can just turn them off by clicking the eyeball/visibility icon for each.