Help Making the app fit on iphone 3.5 inch problem

Hello

I’m now on pg 127PDF where you need to replace the 4-inch iphone to a 3.5 inch preview.
i followed the steps to add a 3.5 inch phone and i rotated it to landscape but my slider of the bullseye game is still not fitted right on the screen i cant see a part off the slider and i cant see my targetlabel.

please help?