In my screen ‘conditie’ I can only look back 3 months. If I click on 6 month or 1 year the conditie-graph does not change, it stays on three month. (While I have strava-data of many years). Is there a trick to look back more in the past?
Given that I don’t see a ‘supporter’ status on your profile pic, that Strava history is probably not entirely available.
You have to be a supporter (on Intervals) to pull in more then 3 months of history.
If you browse the calendar to a period older then 3 months, do you have activity data?