Samsung Calendar is not syncing TO anything, not even to Samsung Cloud

[Malakias]

I have been using Samsung's built in calendar app, and it is set to sync with Samsung Cloud and Google calendar. If I make an event in Google calendar, even in PC browser, the calendar app will sync it FROM Google calendar. However, it does not sync TO Google calendar even when I press Sync now.

But what's even more serious, it does not push any data to Samsung's own cloud, eventhough I have set Samsung Cloud so that it syncs Calendar data. When I sign in to Samsung Cloud on browser, I can see that this setting is on. I have set only Notes and Calendar apps to sync to Cloud, and you can see below that Notes sync works but Calendar has never synced any data, and I have had this phone over year now!

[Malakias]

I have to mention that backing up calendar data to cloud works; I just tested that it shows in cloud as backed up data fom calendar. However, synced data does not show anything.
I don't really understand why there even is synced and backup data separately in cloud; why cannot it use just the same storage for both purposes(?)

But anyway, the biggest problem is that I cannot see calendar data from my phone with any other device using sync. So I guess I have to start using Google calendar app.

[Holly81]

I'm trying to transfer calendar data across phones also. It says it's synced,but they're not. Would love to see if anyone can help