Great, you’ve got the latest version installed. 
I forgot I have a couple of backup cams with the new interface (model OG) so I fired them up to see what we can see with this:
If you’re dragging this bar down to shrink the Events list:
…it will enlarge (& zoom) the Live View window increasingly the lower you go.
If you drag below around here:
…it will “snap” into a zoomed-in, full screen view you can swipe around:
To return to the regular layout just double-tap that view. 