I think I've got it figured out now. I meant the pop up window fitting the image whether it's long and vertical or smaller and horizontal. I played around with it for the last few hours and I understand it a little better now. It fits the imagine no matter what the shape.
And thank you for telling me where to find the ad moderation thing. I thought that had something to do with it, but wasn't 100% sure. I appreciate yout help and all the work you've done here.