Proton experienced a notice incident on June 30, 2026, lasting —. The incident has been resolved; the full update timeline is below.
Update timeline
- resolved Jul 01, 2026, 12:05 PM UTC
We experienced an infrastructure issue on our API that caused some users to experience an empty Calendar app on Android, with no events or calendars displayed. No data was lost, and all events and calendars remained safe. The underlying issue was resolved at 2026-06-30 19:38 UTC. If you have been affected and are still not seeing your data within the app, here are quick steps to resolve the issue: Tap the hamburger menu on the left side → Click Refresh If that was not sufficient, you can log out and log back in. A new version of Calendar will be released before end of day Jul 1, to automatically fix the issue. Should you require further assistance in the matter, please contact support.