If you forget your Driver ID, you can reset it in the app, or on the web.
Reset Driver ID in app:
Navigate to the wallet/savings section of the GasBuddy app and tap the settings button (top-right). Once in the settings screen, click on "Reset Driver ID" and follow the prompts on the screen until you have successfully reset your ID.
Reset Driver ID on the web:
Visit pay.gasbuddy.com/wallet/ from your browser. Here you will be prompted to sign in. After signing in, you will have the option to reset your Driver ID.