For your security, every failed sign-in shows the same message. Check the email address, the password (caps lock) and that your authenticator app’s clock is correct. Still stuck? Reset your password.
Too many attempts
After several failed attempts, sign-in is paused for a while. Wait 15 minutes and try again, or reset your password.
An account with this email already exists
You already have an account. Sign in, or reset the password if you forgot it.
Lost access to your authenticator app
Use your backup code in place of the app code. If you lost it too, contact support from the email address on your account.