About the app

back number app won't open.

If back number app crashes immediately after launching,please uninstall the app and then reinstall it from the App Store/Google Play.

If the app still won't launch after trying to reinstall it, please contact us using the inquiry form below.

Other questions about the app

• Q.
  "Not registered" appears on my back number app page
• Q.
  I can't log in to back number app
• Q.
  About push notification settings for back number app

back