Calendar access denied

Open System Settings → Privacy & Security → Calendars and enable access for Yera, then return and click Refresh.

“No calendars” in picker

Confirm Calendar access is granted and the Calendar app has at least one visible calendar/account configured.

Can’t save an all-day event

Confirm Premium is unlocked, the title is not empty, and the selected calendar allows modifications rather than being read-only.

Premium purchase is not recognized

Open Yera Settings, find the Premium section, and choose Restore Purchases. Make sure the Mac is signed in to the Apple Account that purchased Premium.

Events appear missing

Check the visible start month, month span, selected year, and selected calendars. The visible window can move month by month.

Interface feels stale

Changes made in Apple Calendar appear automatically when macOS reports them. If a change has not appeared, use Refresh. For changes from another device, first check that they have synced to Apple Calendar on this Mac.