# Sign in & sync across devices

# Sign in & sync across devices

Sign in with the same account on each device. Your environments and saved days sync through the cloud when you're online — local drafts stay on that device until sync succeeds.

## Sign in

1. Open Being Optimal and choose **Sign in**.
2. Complete email or social sign-in.
3. Pick or create an environment if prompted.

If you see “sign in again,” your session expired — sign in once more; your cloud data is not deleted.

## Sync across devices

- Stay signed in on both devices.
- Wait for the header sync status to show success after edits.
- If sync fails, retry from the banner, then see [Troubleshooting](/faqs/troubleshooting).

## Still stuck?

Email [support@beingoptimal.org](mailto:support@beingoptimal.org) with the on-screen error code only. Do not send meals, LMP/due dates, blood results, or journal text unless support asks.

<OpenInApp surface="profile" label="Open account →" />

<Related ids={["faq-troubleshooting", "faq-account-security"]} />