To update your Sign in with Apple settings or email:

1. Open your iPhone's settings menu
2. Tap on your name
3. Tap password & Security
4. Tap Apps Using Your Apple ID
5. Tap on TouchTunes
5. Select "Stop Using Apple ID"
6. Tap on "Stop Using"

Then, delete and re-install the TouchTunes app.

Next time you log in, tap "Connect with Apple" to be connected to your old account. You can then select "Share my Email" with TouchTunes and we will be able to email you directly.