Error with Outlook integration for interview scheduling

[JakobDigranes]

Hi all

We have configured integration with Exchange Online for interview scheduling;
https://help.sap.com/docs/successfactors-recruiting/setting-up-and-maintaining-sap-successfactors-re...

And connection is successful, and scheduling is successful - however, nothing appear in mailbox for serviceaccount used, not in the mailbox of the person where interview is booked. Both are internal mailboxes. 

Anyone have any tips for troubleshooting, or another piece of documentation other than the one linked? 
Enterprise app have all permissions configured, and administrator have consented. Service accounts is licensed with Exchange Online P2

[JakobDigranes]

Looks like there was some missing permissions in the backend: 

some backend settings what was missing was the emails in triggers.

Working now