Issue Summary

• Login on care platform
• Send message to android user (with a backgrounded app)
• User doesn't receive push notification

Root Cause

• Application configuration was using a legacy GCM sender ID used for push notification on android;
• Our legacy sender ID has been marked deprecated yesterday morning and Google switched to use firebase only sender ID;

Resolution and recovery

• OTA update for the 2.5.0 apps with the changed sender ID to a FCM id (853821706454);

Corrective and Preventative Measures

• We have had issues in the past with push notifications, and they all end up being some form of configuration issue;
• Firebase console does not show error details, always use the API to troubleshoot: at API level, the root cause is clearly mentioned;
• Last but not least, anytime there is an issue with push notifications, triple check the configuration of the App;