Sync usually fixes itself on the next attempt. When it doesn't, work down this list.

Checklist

1. Are you signed in? Open Settings — if it offers sign-in, you're signed out; sign in and sync resumes.
2. Is Pro active? Cloud sync requires a Pro subscription. Check your plan in Settings — if Pro lapsed, sync pauses (your local data is untouched). See Cancel your subscription or request a refund for what lapsing does and doesn't affect.
3. Do you have a connection? Paddock Wi-Fi lies. Try cellular, or wait for real signal — the app is offline-first and will catch up.
4. Still connected to your MyChron's Wi-Fi? The AiM-… network has no internet. Leave it after downloading and sync over normal Wi-Fi or cellular.
5. Retry manually. Tap Sync on the sync status card in Settings and watch what it reports.
6. Update the app. A store update can carry fixes the sync needs; old app versions can stop syncing against newer cloud changes.

Reading the markers

An offline marker on a session means "on this phone only, not backed up yet" — it's a state, not an error. It clears when sync next succeeds.

Still failing?

Email contact@lappersnapper.com with your account email, roughly when it started, and what the sync card says. Include a screenshot if you can — it shortens the back-and-forth.