please see screenshot below:-

or should it be move forward/back, which still does not work here.
The boys above are correct..
Shift/enter is eyepoint higher (holding shift while tapping enter)
Shift/Backspace is eyepoint lower
Plus and minus keys zoom and unzoom
Pan with hatswitch or spacebar/mouse(view up, down, right, or left. Holding spacebar while moving mouse.)
Try left clicking your screen anywhere if these views won't work and try again.
If all else fails check your key assignments in FSX and if you are trying this from a joystick calibrate and check your joystick profiles.
That image you've shown is not according to the default key assignments..