The little red 'Feedback' button is on every page.
Bottom, right hand on this iPad Mini screen right now. Right hand, half way up on a PC/Mac screen.
The feedback panel is about a third of the area of the whole screen when I pressed it just now. ('Landscape' on iPad Mini screen.)
Also, there is no 'jumping' after screen refresh on my iThings today. There usually isn't, but you get an occasional one (usually LG) that gets a bit annoying. ('Jumping' is non-existent on Mac screen.)