I don't see anything wrong with the perimeter stroking video, per se, but the description is misleading. This IS supposed to be the Perimeter Stroking pattern from Adult Pre-Bronze and Pre-Preliminary Moves in the Field. However, the entry steps are optional on that pattern.
The app lists the demonstrators' intro steps, but you don't have to do those particular steps for a class evaluation or Moves test. The demonstrator starts out facing the short wall and does her intro across the hockey crease line, which is a little confusing when the description talks about long axis but the description is correct. I teach it with two strong strokes along that short axis followed by a single forward crossover as the intro before starting the pattern.
The "strong forward inside edge transitions" is a fancy-schmancy way of describing forward stroking. The judges want to see bend, shift and push. The demonstrator is heading down the long axis of the ice, which is correct.
The five crossovers at each end are intriguing: one in the corner to start the curve along the short axis, one above the hockey circle, one above the goalie box, another above the second hockey circle, then one more in the corner, almost heading down the ice. I usually for "less is more" by using four crossovers on the end pattern, but I might try that with my smaller skaters since kids don't count. I was afraid that letting them do six would cause them to do 26! Five is do-able.
Would you please report this particular issue to the developer? I think that a question coming from one of their target users would be helpful. (vs. an old instructor/coach who skated ISI. ;-) ) The email to use is firstname.lastname@example.org