Please provide a screenshot of your blocks as well as the project (aia file)
Taifun
you are trying to do something (in this case send a notification) regularly every 30 minutes
this is a job for an alarmmanager
search the community for a free basic alarmmanager or use my paid alarmmanager with advanced features App Inventor Extensions: Alarm Manager | Pura Vida Apps
Taifun
Earlier i built a mqtt app, which was stooping after sometime. Because of that I am sending notification message every 30 minutes with timestamp to see after how long the app stops.
Yes, unrestricted battery background usage is enabled
This should help a bit. It is a Motorola device-specific behaviour.
Keep the application open in recent menu and check if you have an option to "Lock app".
[How can we run a task at a specified time? The yellow block is not supported. I need the procedure to run at a specified time of 00:05.
Hello, here are your options:
a free solution
a paid solution
I bought this extension a long time ago, but it doesn't solve my problem. That's why it needs a background data refresh at 12:05 AM.
The following example shows the current weekday at alarm time. [PAID] ⏰ Alarm Manager Extension with Notification or Autostart - #222 by Taifun
Just call your method instead
Taifun
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2 posts were merged into an existing topic: [PAID] 
Alarm Manager Extension with Notification or Autostart