Hi ​@CriMar,

I'm not using Suunto myself but from the available documentation, it seems that you need to do the setup in the Suunto app (and then only confirm the connection in Strava). In general, disconnecting & reconnecting often helps to fix syncing issues.

Here's the related article:

https://support.strava.com/hc/en-us/articles/360018647552-Suunto-App-and-Strava