# Account & security FAQs # Account & security FAQs Account setup, environments, and access. For sync failures see [Troubleshooting](/faqs/troubleshooting). ## Sign in / does data sync across devices? Yes — sign in with the same account on each device. See [Sign in & sync across devices](/guides/account/sign-in-sync-devices). ## What is an environment? An environment is a separate planning context (for example one pregnancy or household profile). Switching environments changes which day plan and prefs you see; it does not merge meals between environments. ## Account setup failed / “provisioning”? Rarely, account linking to cloud storage can fail on first sign-in. Sign out, sign back in, and wait for the shell to finish loading. If it keeps failing, email support with the error code only. ## Change email or password? Use the Account profile / security screens in the app (Clerk-managed). Prefer changing credentials there rather than emailing passwords to support. ## Track more than one pregnancy? Use separate environments when you need isolated plans. Do not put clinical details in support email unless asked.