Hi,
today I accidentally started with the Cool Down. First I did not notice, as some warm ups have also the BlackRoll in use.
Though when stretching further, I wondered.
I completed the Cool Down first. This should not be possible, or at least a warning coming up.
I suggest also go start with the Warm-Up. One may be able to interchange different exercises, but not Intro and Outro. 
Once your are at it:
If I finish one part of a workout, it scrolls up to the top. It should rather bring me near to the next item.
Also the button „Adapt session“ is present the whole training, urging to be pressed. This could sit somewhere less present. Why not having a button „next“? 
Thanks,
Maurice