Google sometimes invalidates app access: after a password change, if you removed the app from your Google account, or occasionally just with time. When that happens, your channel shows as needing reconnection in Chillframe and we email you.
While disconnected, scheduled posts pause and publishing is unavailable. Reconnect within a day of a missed slot and that post still goes out; older slots are skipped rather than posted late.
The fix: go to Settings, open Channels, hit Reconnect and confirm with Google. Your Series resume automatically.
If reconnecting doesn't stick, email [email protected] and a human will read it.