Ok. If you add single or multiple calendar events directly in Google via the Google website on Computer browser or Mobile Calendar app do they appear ok ?
If they are creating single and multiple Google Calendar events online ok via a Browser or other Google Calendar app, sometimes nothing then is syncing from eM Client Google Calendar to your online Google Calendar (when you create a single or multiple Google Calendar event in eM client), is if you are eg: selecting the wrong Google Calendar under the account in eM Client when you “Create the New event / events”. So it’s trying to sync to a black hole & goes nowhere.
However if you are certain your are entering Single or Multiple Google Calendar events in eM Client correctly under your account in eM Client when you create them and are not synching, then try repairing your Google Calendar in eM Client.
Note:- Before repairing your calendar, make a backup via “Menu / Backup” using eM Client for Windows. Or Mac via “Menu / Backup” via the dropdown menu along the top menu.
(To Repair Google Calendar in eM Client).
Click the Calendar icon at the bottom left of eM Client.
Then “Right click” your “Gmail Calendar” and “Click Properties” at the bottom
Next click the “Repair” tab at the top and finally click “Repair”. This will take time as eM Client has to rebuild the local calendar cache etc
If the repair in Google Calendar in eM Client still won’t sync single or multiple events to your online Google Calendar, then I would be removing the whole Google Calendar account again in eM Client and re add as new in Tools / Accounts and add Google Calendar via the automatic wizard.
Also remove an reference to Google Calendar in your Online Google Security allowed app sections before readding if you start new.