How do I sync DigiCal with multiple Android devices?

Make sure that all your Android devices have DigiCal installed and that they are synced to the same calendar/email accounts. Otherwise it won't work.

Here's a help page explaining how to sync DigiCal with your calendar account.
- https://digibites.zendesk.com/hc/en-us/articles/200299903-How-do-I-sync-DigiCal-with-calendar-servers-Google-Calendar-Outlook-com-Windows-Live-Hotmail-Exchange-