Garmin not syncing automatically

Hello,

Garmin is not syncing automatically for me.
The connection with garmin is setup.

I’m trying with short “wingfoil” session using the Waterspeed connect IQ app on the garmin
Also tried a simple “windsurfing” built-in activity record.

Each time the sessions are 10-15s tests, but they are synced fine in both strava and waterspeed, suggesting WST is having issues.
i’m not using the comma separated filter for imports.

Is there a minimal activity length under which WST isn’t syncing?
Is there a way to troubleshoot?
thanks