Activity doesn’t appear on Garmin Connect

I did a trail running activity but after the synchronization it doesn’t appear on Garmin connect. I can see it on the watch, but not on the app, although data like hill score, vo2 max eccetera are correctly updated. I have a brand new fenix 7 pro solar and it always worked good until yesterday. I also tried to import it manually on the pc, but I can’t find the activity. The strange thing is that if I looo the statistics of the activity from the watch, it says that I stayed 30 minutes in zone 3 and 15 minutes in zone 2, but the activity lasted 1h 20 min, not 50 minutes. Someone can help me please?