The most videos of the IB5 - have been with the Ford's Focus car, but since the Fiesta and Focus use similar "bolt patterns" to bolt them to their respective carriages - Ford kept the design and just transferred the motor mount points and even the differential and CV-axle shafts to match up to their footprints
So the reason for the questions was to see if your shift "H" pattern was skewed to one side or another.
The cables and it's assembly are "length" sensitive and if the plate and the tab are hard to move, the cables themselves will alter their geometry and make a mess even bigger - for now you have lost a gear you need to use to even get up past hilly stops and creep out of places that would otherwise make your wheels spin due to the lack of traction you could have if you keep the rotational speed down (1st Gear reduction versus 2nd).
Ok, the whole point of the posts are to see if you are having issues with an effect of what I call scrunching.
That is when one of the cables is stretched or the housing itself is damaged and the bracket that holds the cables so their gimbals can form the proper geometry is off - making it harder to shift
The shift pattern then becomes a tighter "H" pattern - that has most of 1/2/3/4th rather close together with 5th and Reverse - seeming to be in aspect to the others far- away from the other cluster of gearing.
Motor mounts do this too, the torquing of the gear mesh can get to a point where you seem to be popping off gears than to be simply releasing them.
It just may be that the housing got struck and the geometry clearance to make the shift pattern full-figured is not able to be done due to a bent bracket or clearance problems.