I have 4 events on my GC. Run/10K with Garmin Coach Greg (primary), Trail run/10K (supporting), Run/Half marathon (supporting) and Mountain Biking/75k. And the last one not synced with my Fr956 (fw 24.12). Try with GC, GCM, GE. Reboot watches, sync with BT and WiFi. Only first 3 events on my watches.