Welcome aboard.
Can you provide an example of an activity you are trying to edit?
Can you explain the power meter data problem in more detail? It may be more appropriate to address that issue first and foremost.
The Planner shows what you have done in the past along with any activities you may decide to do in the near future.
You can also enter and assign XSS values to activities performed outside of Xert that cannot be synced from other sources.
You wouldn’t use the Planner to edit activity synced from elsewhere such as Garmin Connect or Strava.
Since you are new to Xert I suggest you start here –
Beginner questions - Support - Xert Community Forum (xertonline.com)
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