Kalender Änderungen erscheinen nicht unter iOS, aber unter macOS

[amarokWPcom]

Probably this is more of an iOS problem...



Does anybody of you face the same problem or found a solution for this inappropriate behaviour on iOS side?

I have the following situation:

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If I create an event inside the Synology Calendar App

• it appears in Calendar macOS (MBP)
• it appears in Calendar iOS (iPhone)

If I edit this event inside the Synology Calendar App

• changes appear in Calendar macOS (MBP) - but only after refreshing
• changes NOT appear in Calendar iOS (iPhone) - only after going in edit mode inside the event trying to change something

If I delete this event inside the Synology Calendar App

• it delete in Calendar macOS (MBP) - but only after refreshing
• delete NOT appear in Calendar iOS (iPhone) - only after going in edit mode inside the event trying to change something

---

If I create an event inside the Calendar macOS (MBP)

• it appears in Synology Calendar App
• it appears in Calendar iOS (iPhone), but it seems to take long time

If I edit this event inside the Calendar macOS (MBP)

• it appears in Synology Calendar App
• changes NOT appear in Calendar iOS (iPhone) - only after going in edit mode inside the event trying to change something

If I delete this event inside the Calendar macOS (MBP)

• it delete in Synology Calendar App
• delete NOT appear in Calendar iOS (iPhone) - only after going in edit mode inside the event trying to change something

---

If I create an event inside the Calendar iOS (iPhone)

• it appears in Synology Calendar App
• it appears in Calendar macOS (MBP)

If I edit this event inside the Calendar iOS (iPhone)

• changes appear in Synology Calendar App
• changes appear in Calendar macOS (MBP) - but only after refreshing

If I delete this event inside the Calendar iOS (iPhone)

• it delete in Synology Calendar App
• it delete in Calendar macOS (MBP) - but only after refreshing

---

My settings are: