1. As long as you don't log in to our site anymore, your account is basically deleted and no one will see your logo or know that you ever rode the train.
2. To revoke SubscriberTrain's access on your account, please follow these instructions from Google: https://support.google.com/accounts/answer/41236?hl=en
or try going directly to: https://security.google.com/settings/security/permissions
3. If you have a paid first class ticket, just log in and click to cancel your 1st class upgrade.