Hi ​@Anastazy, how are you recording those activities, and how are you syncing them to Strava?

@Jana_S I record it through the Apple Watch Workout app, and Strava has full access to my health data. So if I’m running or walking - Strava shows it, but not tennis. 

Ok try the following - go to the mobile app > tab You > tap the gear wheel in the top right corner to open Settings > Manage apps and services > Health, you should see it in the list of activities with the option to import - does that work?

Also, if you won't mind me asking - have you changed anything in your settings (connected another app to Strava etc) when it stopped working? Just trying to figure out the cause of the problem & whether this could be a bug in Strava...