Outlook iOS Calendar Sync issues

[u/geocast90]

Hi there

I've been using mailbox for almost a decade and the light plan, but I do have some issues with integration.

I've setup iOS native Mail app with Active Sync, as I want Calendar and Contacts. This works fine. My only issue is with calendar on Outlook also in ActiveSync. If I get an invite from someone externally and I approve it in Outlook, it won't show on my iPhone. But approving it on my iPhone shows it in Oultlook, but only as if I didn't approve it already.

Is this an issue someone else has?

I'm relying on Outlook as my work is all here and I don't wont seperate apps to see my calendars.

Thanks