Sign in or recover your account

Use the same account on Android and in the browser. Google sign-in is available when configured; email and password always work.

Choose Google or enter your email and password. To register, switch to the create-account mode.
After email registration, open the confirmation email, including your spam folder. Then return and sign in.
If you forgot your password, choose Forgot password? on the sign-in screen. Open the email and set a new password in the web app.

Do not create a second account to recover missing calendars: access belongs to your original account.

Android sign-in screen with email, password and password-reset link.

If it still doesn't work

Read related help or contact support. Tell us the app version and what you tried; never send passwords or private calendar contents.