How do I use the same account on another device?

Use the same sign-in method linked to your Calsa account on the new device. If you choose email, start the sign-in there and follow its email-link or code instructions. A link opened in another browser does not automatically sign in the browser where you started.

Keep the original device available until its pending entries have synced. Check that the account, selected date and history match on the new device. A new device does not require another subscription or a new account. Contact support if the same account still shows missing records.