Reconnecting a calendar that stopped updating
Google and Microsoft connections rely on an authorization your account granted once. Organizations sometimes make that authorization expire — a Google Workspace policy with a maximum session length, a Microsoft Conditional Access rule, an administrator revoking third-party apps. When it happens, Dayfolio tells you, and one click restores it.
How you'll know
Dayfolio sends you an email saying it lost access to that calendar.
On your planner page and in Step 6, the connection is highlighted as needing attention.
Events from that calendar stop updating in the planner.
Reconnect
Open your planner at app.dayfolio.io → Change calendar.
In the highlighted card, press Reconnect and sign in with the same account.
Press Sync now.
Reconnect refreshes the authorization only: your calendar selection, colors and hidden words are kept, and the next sync picks up where it left off.
Reconnect vs. Disconnect
Disconnect removes the connection together with its settings, which is what you want when switching to a different account. If you connect again after a Disconnect, all calendars of the account start selected — uncheck the ones you don't need and set colors again. See Connecting Google Calendar and Connecting Microsoft Calendar.
If it keeps expiring
That's the organization's policy at work, not something in your planner. For a work account, the iCal link published from Outlook on the web (or the Secret address of a Google calendar) doesn't depend on that authorization — see Adding a calendar with an iCal/ICS link. For Microsoft accounts, IT can also approve Dayfolio for the tenant so the authorization is stable — see Connecting Microsoft Calendar (Outlook, Microsoft 365).