The X3 App gets no notifications at all

Area: X3 App · Updated: 31 Oct 2026 · Auf Deutsch · All articles

Symptoms

  • Konto › Mitteilungen says „Mitteilungen sind auf diesem Telefon ausgeschaltet. Deine Einstellungen gelten, sobald Du sie einschaltest.“
  • „Test senden“ answers „Die Testmitteilung kam nicht an. Erlaube Mitteilungen und öffne die App noch einmal.“ or „Es gibt noch kein Gerät, das Mitteilungen bekommt.“
  • Geräte says „Sobald Du Mitteilungen erlaubst, erscheint dieses Telefon hier.“
  • The API answers 409 device_owned: „this device receives pushes for another person until their sign-in on it ends“.

Cause

  • The notification permission is off on the phone („Später“ or „Ohne Mitteilungen weiter“ on first start).
  • Another person was signed in on the phone before: it gets their pushes until their sign-in there ends.
  • Android without Google Play services cannot receive pushes.
  • The category is off or quiet hours hold the notifications.

How to fix it

1. Allow notifications

  • In the dashboard: X3 App › avatar › Konto › Mitteilungen › Mitteilungen erlauben (or Einstellungen öffnen)
  • With Claude (MCP): No MCP tool (only you can grant the permission on the phone)

2. Check and test the device

  • In the dashboard: Konto › Mitteilungen › Geräte › Test senden
  • With Claude (MCP): No MCP tool (devices and test notifications are personal and only visible in the X3 App and the dashboard)

3. Remove another person's sign-in from the device

  • In the dashboard: Konto › Mitteilungen › Geräte › Entfernen
  • With Claude (MCP): No MCP tool (every person manages their own devices)

The other person signs out on the phone or removes the device from their devices. Then open the app and sign in again.

4. Check the rules

  • In the dashboard: Konto › Mitteilungen › Neue Leads
  • With Claude (MCP): notifications_rules_list
  • The MCP tool exists since the update of 31 Oct 2026; it needs a Claude connection signed in as a person (OAuth).

How to tell it worked

  • „Test senden“ answers „Testmitteilung gesendet.“ and the notification shows on the phone.
  • Geräte lists this phone.