1. Settings → Integrations → Google Calendar → Reconnect. Fastest fix — refreshes the OAuth token.
2. Check included calendars — same panel, tick the calendars you want pulled in.
3. Wait ~60 seconds after connecting — the first sync pulls up to 90 days back and 180 days forward.
4. Multiple Google accounts? LemTask syncs the account you authed with. Sign out of Google in another tab and reconnect if you picked the wrong one.
5. Blocks not appearing on Google? Check the block has a real start + end time (not just a due date).