Someone else may be using my account
Lock the account first, then look. The "lock my account" link in any security notice signs everyone out and stops new sign-ins until you reset the password.
What to do
- Use "lock my account" from the latest security notice email, or reset your password now.
- Turn on two-step sign-in in Security.
- In Activity, check the change log for anything you did not do.
- If payments or settings were changed, tell us at once with the times you saw: choose "Security report" when you write.
Did this solve it?