Missing activity(s)

Dear all,
I’m very happy with Citystrides. One thing I unfortunately noticed is that my first marathon has been skipped and I’m wondering how I can add this single activity. Such a pity, because this race is of course very important for me. I’m syncing Citystrides with Strava. I initially switch activity type from running to swimming and back due to a mistake with cold fingers :wink:

Kind regards,