There is an issue syncing with Google Calendar for firmware versions below 2.0.0. It may affect some of our users.
We’ve identified the issue and built a new version. The new version is being reviewed by Google. It may need 4 weeks to pass the review. We have also built a beta version available now for syncing with Google Calendar.
Please go to Settings->Check update to upgrade the calendar device. After installing the update, please go to Settings->Beta Test to install the beta version.
And please send your Google account name to contact@syncgocalendar.com, and we’ll add it to the test group. The sync feature should work after that.
If your device can already work with Google Calendar, there is no need to upgrade to the beta version.
Thank you for your support and understanding.