I want to sync both Zoho Projects and Zoho CRM events to Zoho Calendar to have an overview of all appointments. 

It seems that events in Zoho CRM are syncing well to Zoho Calendar. Although I've set Zoho Projects to sync with Zoho Calendar. It seems that it synced once but is not updating the changes/new events which are made in Zoho Projects. 

The initial events are loaded from Zoho Projects to Zoho Calendar, but changes are not visible in Zoho Calendar. I tried to disable / enable the sync in Zoho Calendar and tried the button "Bijwerken" which means something like: "Update the Sync" but also not working.

Can you please help me with this one?

Thanks!

Justin