Garmin Connect – activities not syncing to Intervals.icu

[MartinaDeak]

Hi David,

I’m having a problem with Garmin Connect activity synchronisation and would appreciate your help.

I successfully connected my Garmin Connect account to Intervals.icu. Uploading planned workouts from Intervals.icu to Garmin works correctly, but downloading activities from Garmin Connect does not seem to work reliably.

Here is what happened:

1. I initially connected Garmin Connect to Intervals.icu.

2. I then used the “Import All Garmin Data” option to import my activity history.

3. Unfortunately, every activity was imported twice. Both copies showed “Garmin Connect” as the source.

4. I manually deleted the duplicates in Intervals.icu.

5. Since then, new activities have not been syncing automatically. For example, today’s strength workout, recorded directly on my Garmin Forerunner 265 and successfully synced to Garmin Connect, is still missing from Intervals.icu.

Additional information:

• “Download activities” is enabled.

• “All activities” is selected.

• Garmin’s third-party activity sharing permission is enabled.

• I tried reconnecting through Safari on my iPhone, but got a “Network error” after being redirected to Garmin Connect.

• I eventually managed to connect successfully using a PC.

• Uploading planned workouts from Intervals.icu to Garmin works fine.

Could you please check whether Garmin is sending activity notifications (webhooks) to my Intervals.icu account, and whether there might be an issue with my Garmin integration?

Thank you very much!