Trail run will not sync to Garmin Connect

Dear All,

I have an issue since yesterday and was wondering whether anyone has encountered something similar or knows a solution.

I had entered a race into the calendar, a trail run event, and synced it to my watch, a Fenix 8. At the gun, I started the race from the trail run menu (without navigation) and the race was recorded properly. I saved it at the end. 

Since then, I can see the race on my watch in the "last 7 days" and "history" widgets, select it and check the stats. It will however not sync to my phone´s (Android) Connect App.

I tried the usual workarounds, restarting the devices,, disconnecting the watch and reestablishing the Bluetooth connection. Nothing seems to help. Grateful for any ideas.

Thanks