Stryd offers structured workout and automatic power scaling for treadmill workouts that include incline, such as for hill workouts. Only Stryd-created structured workouts at this time. As a paid member, users do have the option to build their own custom treadmill workouts, but Final Surge and TrainingPeaks are not yet supported for the execution. The Stryd Mobile Treadmill Experience requires a value for % incline for each workout segment on a treadmill, but TrainingPeaks and Final Surge workouts don't contain this required value.
If you have a Stryd Membership, then you can build a copy of the workouts from a third party training platform with the Stryd Workout Builder, and then you can execute that workout on the app.