Steps do not tranferred into Garmine connct app

Hello

I skipped sync for 2 days since the first day I had no activity at all. On the second day, I had a 9k run. I synced my fenix3 in all possible ways, via Bluetooth, wifi and with the charger in a laptop and through Garmin Express. My activity is downloaded just fine and shown in Garmin Connect but not a single step is transferred to the Connect app. Keep in mind that I can still see my steps for the 6th (Wednesday) and 7th of August (Thursday) on the watch in the weekly step count screen. It was around 16k steps. 

Question: Is there any way to manually add the steps for the specific days? Or can you point me to a way to successfully transfer these steps and make them visible to the Garmin Connect app?